Abstract:
A laid cable configuration contains cables, preferably electric cables, data and information transport cables and/or control cables, in particular fiber optic cables, and fluid transport tubes and is to be disposed in galleries, tunnels, shafts, pipes, channels or the like, in particular water and/or waste-water guiding systems. The configuration contains at least one cable which is to be laid, which can be unwound from a drum from the region of an opening providing access to an installation shaft or access shaft toward the respective pipe or channel, or drawn or fixed in a stationary manner in the pipe, channel or the like. The configuration includes a flexible and/or articulated carrier band having lateral edges that are laid against an inner wall surface of the pipe or the channel. A weighting body is suspended from the carrier band.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This is a continuing application, under 35 U.S.C. §120, of copending international application No. PCT/AT2005/000079, filed Mar. 8, 2005, which designated the United States; this application also claims the priority, under 35 U.S.C. §119, of Austrian patent application Nos. A 446/2004, A 1081/2004, and A 1801/2004, respectively filed Mar. 12, 2004, Jun. 24, 2004, and Oct. 25, 2004; the prior applications are herewith incorporated by reference in their entirety. 
    
    
     BACKGROUND OF THE INVENTION 
     The present invention relates to a new cable laying configuration, preferably electric cables, data and information transport cables and/or control cables, in particular fiber optic cables, fluid transport tubes or the like in galleries, tunnels, shafts, pipes, channels or the like, in particular water and/or waste-water guiding systems. The configuration contains at least one cable which is to be laid, which can be unwound from a drum from the region of an opening providing access to an installation shaft or access shaft or the like toward the respective pipe, channel or the like, or drawn or fixed in a stationary manner in the pipe, channel or the like. 
     Furthermore, it relates to a method for laying cables in pipes, channels or the like using the aforementioned configuration and auxiliary devices to support the new cable laying system. 
     The high growth rate in the field of information technology and telecommunications, but also the ever increasing power demand has made a large-scale construction of the transmission lines and cables of the most varied types and their interconnection required in the last few years. 
     Even in those fields with few obstacles, the lines or cables provided for the noted purposes are no longer laid to a large extent over trouble-prone overhead lines in the country, but, if possible, underground whereby, although the excavation and laying work required for this is relatively expensive, it is hampered relatively little by other underground installations. 
     Laying cables and lines of this type under the surface in congested city areas is much more difficult, whereby the aspect of traffic obstructions due to excavation work should be noted here as a substantial disadvantage, in addition to the abundance of existing underground installations. In the course of constructing line systems and data networks with high transmission densities and rates, fiber optic or glass fiber cables represent a substantial improvement and it has already been common for some time to avoid the excavation and construction work required for laying them and to use the existing underground infrastructure of the supply and disposal networks, in particular for water and waste water pipes or sewage systems, for laying cables of this type. It has become routine in many large cities to not only lay data transmission, control and information carrier cables in underground conduit systems but also e.g. power cables. 
     The great advantage of this type of cable laying is that it is no longer necessary to open the ground, associated with a destruction of traffic areas, pavements and significant traffic interference with all the unpleasant requirements and consequences, such as e.g. involvement of several authorities, restoration work and the like, as a result of which considerable time, work and cost savings are obtained and, at the same time, relatively high flexibility with respect to the laying section. 
     Of course, a substantial requirement continues to exist, namely that the laying technology in underground supply and disposal systems can take place with as low an expenditure as possible and that a quick laying is made possible in a short time under the inherently more difficult conditions existing in conduit systems without considerable problems. 
     A technology often used in the past for laying cables and cable lines existed essentially in that cable supports with fixtures for holding or clamping the cable are installed in each case on the walls or on the cover of a tunnel, a channel or the like at distances of about one to two meters and that they are provided with cover plates, hoods or the like. 
     Furthermore, since that time, a large number of proposals have become known for cable-support pipes or profiles having endless gutter or hollow profiles that can be unwound from winding drums at an installation site. 
     SUMMARY OF THE INVENTION 
     It is accordingly an object of the invention to provide a cable laying configuration which overcome the above-mentioned disadvantages of the prior art devices and methods of this general type, which requires a relatively low material and manipulation expenditure when positioning stationary cables (substantially equivalent to fastening the cables) in pipes, channels and the like. 
     Therefore, the object of the present invention is a novel cable laying configuration of laying cables in pipes, channels or the like of the aforementioned type which is characterized in that a stationary positioning of the cables and/or the laying configuration which is optionally maintained by a cable support, is obtained and ensured by the force of gravity and the frictional fit thus arising. It is especially advantageous if the configuration contains a flexible and/or articulated carrier band which can be pulled into the pipe or into the channel, disposed at a distance from the bottom of the pipe, the channel sole or the like and which can preferably be placed against the inner wall surface of the pipe or channel, adjoining both sides with its lateral edges, optionally forming a substantially flat second sole in the pipe or channel disposed above the pipe base and/or channel sole. On an underside pointing to the pipe base and/or channel sole, cable supports are provided for mounting the cable. At least one continuous weighting body is provided on the pipe base and/or channel sole and prevent the cable from rising in the water, waste water or the like in the pipe and/or channel or flowing through them, or a multitude or plurality of weighting elements spaced from one another. Within the scope of the present invention, an especially stable cable laid configuration is provided if the weighting body or the weighting elements lies/lie on the channel sole in which it is provided that the weighting body or the weighting elements is/are suspended on the carrier band supported on both sides on the pipe wall, attached to the underside thereof, and the carrier band(s) is/are disposed pressed against the inner wall surfaces of the pipe and/or channel with its lateral edges. 
     In each case, the weight of the weighting body or elements, i.e. the effect of the force of gravity and the frictional fit released or effected therewith between the underside and the pipe base or channel sole and/or between the lateral edges of the carrier band and the inner surface of the pipe or channel wall is fully sufficient for a stationary stabilization of the configuration without any further auxiliary devices for fastening and, as was found, also in channels or channel sections having a large incline and high flow rate of the water, waste water or the like. 
     Advantageously, the weighting body or elements is/are configured with gutter-like recesses or the like having cross sections corresponding to the slope and the cross-sectional shape of the cables. 
     Hardened inorganic binding substances, such as concrete or mortar material, are suitable as material for the weighting body or elements, whereby it is preferable to use as additives, instead of conventional crushed rock or sands or together with them, minerals having a higher density than quartz, i.e. in particular based on barium oxide, ferric oxides, e.g. hematite, iron slag or the like. 
     However, hardening binding substances based on synthetic resins can also be used, such as e.g. polyesters, with heavy fillers, such as in particular barium oxide, ferric oxides, slags, optionally mixed with conventional sands for producing weighting bodies or elements. 
     An important further advantage of the cable laying configuration lies in that the carrier band which adjoins the inner wall of the channel or pipe with its two lateral edges, assumes, in addition to the local stabilization of the cables by the underside weighting elements, the function of a channel sole on the upper side. This “second sole” has the advantage that it is flat and comparatively “smooth” which reduces the friction of water or waste water when flowing through, as a result of which the flow rate is increased so that the flow cross section reduced by the new cable-retaining configuration deposited on the bottom of the pipe or channel floor is compensated. Furthermore, due to the flattening obtained with the “second sole”, the clearing operations are facilitated which admittedly must also be carried out substantially less frequently since the tendency to deposit and precipitate thick and solid materials is substantially reduced due to the “smooth” surface of the carrier band. On the other hand, there is the further advantage that fine (sludge) particles contained in the waste water reach below the carrier band and clog all cavities located there between the underside of the carrier band and the bottom of the pipe and ultimately form a compact filling which further increases the frictional fit, substantially contributing to the local stabilization that has already been discussed above. 
     According to an embodiment of the invention, the connection of the carrier band and the weighting body or weighting elements can be formed by simple screws or by adhesion or also by mutual clamping or gripping zones or profiles on the lateral edges disposed on the carrier band and on the weighting element or on a casing for same. 
     In a further embodiment of the invention, the weighting body or the weighting elements is formed with a hardened binding agent preferably being concrete or mortar mass, and fastened to the carrier band by fastening elements. 
     In a further special embodiment of the new cable-laying configuration, the weighting elements can be formed in situ, i.e. just prior to pulling the carrier band into the pipe or into the channel by saturating corresponding, not loaded at first, open-pore sponge-like or foam-like bases with a flowable binding mass and subsequent hardening. 
     In an advantageous variation of an embodiment of the invention, the weighting body or the weighting elements are formed as a hollow body that can be filled with a weighting material of a specific minimum density. The same materials as already noted above as additives and binding agents of the weighting bodies or elements are suitable as fillers in this case. 
     In accordance with a further type of the cable-laying configuration according to the invention, an in-situ filling of the interior space formed between carrier band and outer casings of the weighting element with an at first flowable and then binding and hardening binding mass inside the cavities is provided. 
     A variation of an embodiment of the invention, is preferred in the case in which the outer casing or shell is formed of a material that is permeable for flowable substances for the weighting body or for the weighting elements, as a result of which a binding of the weighting elements to the pipe base or the channel sole is obtained in addition to the weighting or the effect of gravity, which further increases the local stabilization of the configuration in the pipe or channel. 
     In accordance with a further feature of the invention, the carrier band is formed from a material that can be bent diagonally to its longitudinal extension, is elastic and can be bent up or down. The material is preferably plastic, polyester, epoxy resin, steel, steel plate or a plastic/steel composite material. 
     It is especially advantageous if, the carrier band is formed with articulated band links, as a result of which every curved longitudinal slope of a pipe or channel can also be accomplished out when pulling the carrier band in with the cables and the weighting elements. 
     Furthermore, it can be advantageous if a full, flat fit thereof with the lateral edge zones to the inner wall surface of the pipe can be obtained by flanging the lateral edges of the carrier band. 
     In a preferred embodiment, the a carrier band has side edges surrounded by an edge-embracing profile band, e.g. of plastic, which assist pulling the carrier band with the weighting bodies and cables into the pipe or into the channel which substantially facilitates by reducing the frictional resistance of the carrier band lateral edges on the inner wall surface of the pipe or channel. 
     The use of the new laid cable configuration within the scope of several embodiments of the carrier band retracting process forms a series of further closely related objects of the present applicant. Thus, it is provided that each finished weighting element be attached to the carrier band on the underside prior to being drawn into the pipe or channel. 
     On-site formation of the weighting elements is performed by filling the outer casings or shells provided therefor with bulk goods of sufficiently high density, e.g. crushed stones or sand and, in particular, with bulk goods having a density that is higher than quartz, e.g. barium oxide, ferric oxide, hematite or the like, or with a flow binder with heavy minerals as admixture that hardens later. 
     In the in situ process, a binding substance that is flowable at first and then sets and hardens is pumped or pressed into the cavity between carrier band and outer casing or shell of the weighting body through a tube or the like that is pulled into the channel with the carrier band. 
     In a further variation of the process, the in situ formation of the weighting body or weighting elements is performed by saturating fundamental substances of a corresponding form each containing a porous, absorbent or foam-like material with a flow binding substance. 
     To facilitate and increase the effectiveness of the draw-in process, an additional embodiment of the method is especially advantageous by using a carrier band draw-in auxiliary train. This additional device can be used to lay all cables and cable supports described in the present application or designed according to the invention. 
     The train is formed of individual link wagons carrying the carrier band for draw-in auxiliary train just mentioned. 
     A further additional and auxiliary device for all cable supports and cables according to the invention is provided to facilitate the laying of the carrier band with the weighting elements and their positioning on the pipe base or on the channel sole. 
     Other features which are considered as characteristic for the invention are set forth in the appended claims. 
     Although the invention is illustrated and described herein as embodied in a cable laying configuration, it is nevertheless not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims. 
     The construction and method of operation of the invention, however, together with additional objects and advantages thereof will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a diagrammatic, perspective view of a cable laying configuration according to the invention; 
         FIGS. 2 to 7  are diagrammatic, sectional views of the configuration with “finished” weighting elements or bodies of a hardened binding agent, in particular concrete; 
         FIGS. 8 and 9  are diagrammatic, sectional views of the configuration with the elements having an outer casing and whose interior space is filled with bulk goods having an appropriate density or with an at first flowable and then hardening binding substance or which can be filled in situ; 
         FIGS. 10A ,  10 B and  10 C are diagrammatic, sectional views of details of a clamp connection of a carrier band with the weighting element or body; 
         FIGS. 11 and 12  are diagrammatic, sectional views each showing configurations with continuous weighting bodies which can be filled in situ with a flowable weighting agent when pulled into the channel or immediately thereafter; 
         FIG. 13  is a diagrammatic, top plan view of a link wagon of a carrier band draw-in auxiliary train; 
         FIG. 14  is a diagrammatic, sectional view of the link wagon of the carrier band draw-in auxiliary train; 
         FIGS. 15A and 15B  are diagrammatic, side views of two stages of a preferred embodiment of a laying process with the aid of an auxiliary train of this type; 
         FIGS. 15C and 15D  are diagrammatic, front views of the two stages of the preferred embodiment of the laying process with the aid of tue auxiliary train of this type corresponding to  FIGS. 15A  and  15 B, respectively; 
         FIG. 16  is a diagrammatic, top plan view of the auxiliary train in a curvature of a sewer pipe; 
         FIGS. 17 to 19  are diagrammatic, top plan views of three embodiments of the carrier bands on the link train; 
         FIG. 20A  is a diagrammatic, sectional view of a further auxiliary device for an accurate positioning of the new cable-laying configuration in the channel; 
         FIG. 20B  is a diagrammatic, side sectional view of the further auxiliary device for an accurate positioning of the new cable-laying configuration in the channel; 
         FIGS. 21A to 21F  are diagrammatic, sectional views of a preferred embodiment of an armature drawn through a vertical shaft of a sewer pipe when used in the cable-laying configuration according to the invention; 
         FIG. 22  is a diagrammatic, perspective view of a configuration according to the invention for laying cables in pipes or channels; 
         FIG. 23  is diagrammatic, perspective view of the configuration of the weighting element retaining elements on the underside of the carrier band; 
         FIG. 24  is a detail drawing of the weighting body retaining element at the articulated connection of two band links of a carrier band; 
         FIGS. 25 to 27  are diagrammatic, plan views of the carrier band in three different embodiments which is provided for laying the cables in pipe channels and on the underside of the carrier band are the weighting retaining element and the cable holder; 
         FIG. 28  is a diagrammatic, top view of the link wagon of the carrier band draw-in auxiliary train; 
         FIG. 29  is a diagrammatic, side view of the link wagon of the carrier band draw-in auxiliary train; 
         FIGS. 30A and 30B  are diagrammatic, side views of two stages of a preferred variant of the laying method with the aid of the auxiliary train shown in  FIGS. 28 and 29 ; 
         FIG. 31  is a diagrammatic, top plan view onto the aforementioned auxiliary train in the curvature of a sewer pipe; 
         FIG. 32A  is a diagrammatic, sectional view, of a further advantageous auxiliary device for an accurate positioning of the new cable-laying configuration in a pipe or channel; 
         FIG. 32B  is a diagrammatic, side view of the further advantageous auxiliary device for an accurate positioning of the new cable-laying configuration in a pipe or channel; 
         FIG. 33  is an illustration of an embodiment of the new configuration with an advantageously configured carrier band; 
         FIG. 34  is a diagrammatic, perspective view of the new cable-laying configuration; 
         FIG. 35A  is a diagrammatic, bottom plan view of the carrier band; 
         FIG. 35B  is a diagrammatic, side view of the carrier band shown in  FIG. 35A ; 
         FIG. 35C  is a diagrammatic, sectional view of the carrier band shown in  FIG. 35A ; 
         FIG. 36A  is a diagrammatic, bottom plan view of the carrier band; 
         FIG. 36B  is a diagrammatic, side view of the carrier band shown in  FIG. 36A ; 
         FIG. 36C  is a diagrammatic, sectional view of the carrier band shown in  FIG. 36A ; 
         FIG. 37  is a schematic illustration of an advantageous configuration of the carrier band on a carrier band drum and pulling the carrier band off from the drum; 
         FIG. 38  is a diagrammatic, sectional view of the carrier band with the weighting body; and 
         FIG. 39  is a diagrammatic, side view of the carrier band. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring now to the figures of the drawing in detail and first, particularly, to  FIG. 1  thereof, there is shown how a carrier plate  1 , e.g. of high-grade steel, is drawn into a sewer pipe  9  in a cable-laying configuration  100  according to the invention in such a way that it braces itself with its lateral edges  11  on a concave inner wall surface  92  of a pipe channel on both sides. A cable  4 , which is optionally held or guided in a cable support profile  3 , is disposed on an underside  101  of the carrier band  1  running along it, and, furthermore, a series of weighting elements  50 , e.g. made of heavy concrete, which are spaced from one another and in a cylinder-segment like form, are attached to the underside  101 , e.g. by screws  102  which on the whole form a “discontinuous” weighting body  5 . 
     The weighting elements  50  have a correspondingly shaped groove-like recess  51  where the cable  4  runs. The weighting elements  50  are substantially formed analogously to a channel base  91  being a base of the sewer pipe  91 , however, they are disposed continuously at a distance thereto. In this way, the weighting elements  50  “are suspended” so to say on the carrier band  1  and in this way the latter fully abuts and is pressed (supporting itself there) against the inner wall surface  92  of the sewer pipe  9  with its lateral edges  11 . 
     With the reference numbers remaining the same,  FIGS. 2 to 7  each show as an “ensemble” in the pipe and as individual components weighting elements  50  with recesses  51  having a contour adapted to the cable  4  or its contour. Furthermore, the carrier plate  1  with its lateral edges  11  adjoining or pressed against the inner surface  92  of the pipe wall which, as the details in  FIGS. 2 and 3  clearly show, are flanged or in which, as can be seen in  FIGS. 4 and 5 , the side walls  11  are furnished with plastic slide profiles  112  that envelop them and facilitate the drawing into the pipe  9  by reducing the friction. 
     The screw connection  102  between the carrier plate or band  1  and the weighting element  50 , fastened and adjoining its underside  101 , can be clearly seen in each of  FIGS. 2 to 4 . 
     Furthermore, it can be clearly seen in these figures that the side of the weighting elements  50  facing the pipe base  91  is curved in a similar manner as the pipe base  91  or the inner surface of the pipe wall  92 , however, that there is a distance everywhere between the pipe base  91  and the underside of the weighting element  50 . In this way, the weighting element  50  does not come in contact with any point of the inner wall surface  92  of the pipe or with the pipe base  91  and does not lie on it. Therefore, in this case also, the carrier plate  1  “is suspended” and the same disposed in this way so as to be weighted. 
     In the embodiments of the configuration according to the invention shown in  FIGS. 6 and 7  (with otherwise the same reference numbers), similar weighting elements  50  are provided which have extensions rounded on their lateral edges  511  and connected with the carrier band  1  and held in position by gripping zones  15  surrounding these extensions and found on the lateral edges  11  of the carrier band  1 . 
       FIGS. 8 and 9  show (with otherwise the same reference numbers) two further cable-laying configurations  100  with elements that are similar in principle to the previously described weighting elements, whereby they are made with an outer casing or shell  55 , e.g. of plastic, and whereby their interior space I between the shell  55  and the carrier band  1  is filled in each case with a bulk material  57  of sufficient density, e.g. gravel, crushed stones, sand or the like. In this case also, the carrier band  1  overlaps the lateral edges  511  of the weighting bodies  50  with its lateral edges  11  and in this case also, a “suspended” configuration of the weighting elements  50  is provided attached to the underside  101  of the carrier band  1 . 
       FIGS. 10A ,  10 B,  10 C show (with otherwise the same reference numbers) three possibilities for a clasping connection of the carrier band  1  and the weighting element  50  by appropriately configured gripping zones  15 ,  515  on the lateral edges  11  of the carrier band or on the lateral edges  511  of the weighting body  50  or a weighting body shell  55  encasing the same or else by a simple clamp profile  150  gripping the side edges  11 ,  511 . 
       FIG. 11  shows (with otherwise the same reference numbers) an embodiment of the cable-laying configuration  1  according to the invention in which an on-site or in situ weighting takes place during or immediately after the carrier band  1  is drawn into the pipe  9  with the cables  4 , and optionally cable supports  3 , in that, in addition to the just mentioned cables  4 , a conveyor tube  579  in the hollow interior space I of the outer casing  55  of the weighting body is also drawn into the pipe  9  for bringing or pressing a binding substance  57 , which serves as a weighting agent that is flowable at first and then hardens, with the carrier band  1 . It can be advantageous if the conveyor tube  579  has permeable openings in its wall for the flow binding substance  57 , as a result of which flow binding substance  57  can exit and in this way more quickly fill the interior space I not only at the open end thereof but also laterally out of it. 
     A weighting aimed for within the scope of the configuration  100  follows another principle as an important aspect, which  FIG. 12  shows a configuration (with otherwise the same reference numbers). A fundamental substance having an open-porous foam or sponge structure is there attached to the carrier band  1  on the underside, the fundamental substance being saturated with a flowable binding mass  57  each time before the carrier band  1  is drawn in with the cables  4 , the binding substance setting so quickly already prior to the final deposit of the carrier band weighting body ensemble on the base of the sewer pipe  91  so that a first stability is obtained. Ultimately, a foam binder composite weighting body  5  is formed due to the hardening of the binding substance  57 . 
     In the embodiment of the configuration  100  according to the invention shown in  FIG. 11 , a continuous weighting body  5  is formed. The weighting body  5  according to  FIG. 12  can be configured continuously or in the form of weighting elements  50  that are spaced from one another. 
       FIGS. 13 and 14  show (with otherwise the same reference numbers) an addition or auxiliary device for the cable-laying process that is advantageously used within the scope of the configuration according to the invention. It includes a cable draw-in auxiliary train  70  formed with several link wagons  7 . The individual link wagons  7  thereof are configured with a wagon body  74  having an axle  701  which supports a pair of larger wheels  71  that are spaced from one another on the outside and provided for the travel of the auxiliary train  70  in the sewer pipe  9 , and two independently rotatable carrier band supporting rollers  75  of a smaller diameter. The weighting elements  50  or the weighting body casing  55  with the carrier band  1  attached to it or them can be placed on these smaller supporting rollers  75  and ultimately drawn into the respective sewer pipe  9  with a relatively small resistance. 
       FIG. 13  shows two link wagons  7  each articulated to one another via a guide pole  73  and a lock hinge  731  or the like in a top view. 
       FIGS. 15A ,  15 B,  15 C and  15 D show (with otherwise the same reference numbers) how first the ensemble  1 - 3 ,  4 - 50  of the carrier band  1 , possible cable support  3 , the cable  4  and the weighting elements  50  are first moved into the sewer pipe  9  on the supporting rollers  75  of the link wagons  7  coupled to form a cable draw-in auxiliary train  70  and how the ensemble is ultimately placed on the base  91  of the sewer pipe  9  when the auxiliary train  70  is drawn away under the ensemble  1 - 3 ,  4 - 50  held in longitudinal position by a guide rope  134 . 
       FIG. 16  schematically shows (with otherwise the same reference numbers) the cable draw-in auxiliary train  70  in a top view, as it just happens to be situated in a curvature of a sewer pipe  9 . 
       FIGS. 17 ,  18  and  19  schematically show (with otherwise the same reference numbers), in a top view, the configuration  100  according to the invention with the carrier band  1  that cannot be bent to the side in a straight sewer pipe section, furthermore, with a laterally deflectable carrier band  1  formed with a number of similar articulated band links  10  in a curvature and in a straight section of a sewer pipe  9  and the carrier band  1  formed with articulated band links  10  and a longer section  1  not laterally deflectable. 
       FIGS. 20A ,  20   b  schematically show (with otherwise the same reference numbers) a further auxiliary device provided to assist in the laying process, namely a tube body  8  which can be filled with air at a higher pressure, which, after the ensemble  1 - 3 ,  4 - 50  has been deposited for a position-accurate immobilization and for pressing them to the pipe base  91  prior to and during the pumping in of ultimately hardening flow binder  57  into the hollow interior space I of the weighting body casing or shell  55 . If the binder  57  is pumped in there, then its weight is sufficient for the ensemble  1 - 3 ,  4 - 50  to remain in its weight-stabilized position and the tube body  8  can then be unloaded and brought to a different place for positioning of the just mentioned ensemble  1 - 3 ,  4 - 50  where the next in-situ filling with binder  57  takes place. 
       FIGS. 21A and 21B  show (with otherwise the same reference numbers) in a horizontal and in a vertical longitudinal section, how a section  4 ′ of an optical fiber cable  4  containing a sewer pipe section  9 ′ is disposed with the carrier band  1  and with the weighting elements  50  on the underside and how the same is guided on the end of the carrier band  1  when the sewer pipe  9  is opened to an installation shaft  95  via the level of the carrier band  1  and finally a spherical curve is ultimately guided vertically ascending along on a wall section  952  opposite the just mentioned opening and how the cable  4  or the returning cable section  4 ″ of the loop returns extending vertically downward on the diametrically opposite area of the shaft wall  952  and again reaches under a second section  1 ″ of the carrier band  1  with the weighting elements  50  via a spherical curve. 
     The views shown in  FIGS. 21C to 21F  of the sections A-A, B-B, C-C noted in  FIG. 21B  show the path of the cable  4  or of its sections  4 ′,  4 ″ at various intersecting positions in detail and show how the area of the installation shaft  95  is covered vis-à-vis the bottom of the channel by specially curved cover elements  160  made of steel, sheet metal, polyester or epoxy resin of the installation shaft  95  and that, at the same time, the mounting support of the curved cable sections  4 ′,  4 ″ of the cable  4  is ensured. 
     This spatially curved cover element  160  has lateral supporting edges  161  with which it lies on the horizontal bottom  951  of the installation shaft  95 . 
     The configuration according to the invention assists in overcoming the problem which occurs due to the fact that, especially when the configuration is drawn into channels or pipes of a smaller cross section, the difficulty arises that a relatively strong curvature or a slight curvature radius in a vertical direction, i.e. first when drawing in from an e.g. almost horizontal path from the surface into an essentially vertical path in a sewer access shaft and then when returning from this shaft into the channel that is horizontal again. In this process, the carrier band and the flexible weighting body have various radii of curvature, whereby the curvature radius of the weighting body is smaller when the configuration is drawn into the shaft than that of the carrier band, while when returning from the channel shaft into the channel, the curvature radius of the carrier band is smaller and that of the continuous weighting body being larger. Consequently, it is important for the draw-in process that the weighting body is connected with the carrier band in a manner that enables a relative longitudinal movement of the weighting body compared to the carrier band. Of course, this is also advantageous for lateral curvatures. It is now assured in the present invention that this mutual bending is substantially simplified in that the weighting body is disposed in a relatively movable manner vis-à-vis the carrier band. 
     It is especially advantageous if, the carrier band is formed with articulated band links, whereby almost any curvy longitudinal path of the pipe or channel can also be accomplished when drawing in the carrier band with the cables and the at least one continuous weighting body. 
     A configuration for cable laying is distinguished especially by a high position stability, in which the weighting body lies on the channel sole or on the pipe base or another configuration in which the continuous weighting body is attached to the carrier band supported on both sides of the pipe walls, namely to the underside of the carrier band, so-called “suspended” and pressed with its lateral edges relatively firmly against the inner wall surface of the pipe or channel by its weight. 
     In a configuration according to the invention, it is ensured with a high degree of certainty that the weight of the weighting body and the friction fit between its underside and the pipe base or the channel sole or between the lateral edges of the carrier band and the inside of the pipe or channel wall is fully sufficient for an actual stationary and lasting stabilization of the configuration without any additional auxiliary aids for fastening them inside the pipe and, as was found, the new construction also meets the demands made on it there under more difficult conditions in channels or channel sections with a relatively large slope and thus high rate of flow of the water, waste water or the like. 
     A configuration having a cable or the like made of steel or the like as a weighting body is especially simple to handle in the cable laying process. 
     In particular, an easily conveyable, free-flowing mineral-based sands, granular material or pellets with a density higher than quartz are suitable as fillers for the weighting body in the form of a material-fillable flexible pipe or tube, i.e. preferably tubes that are based on barium oxide, ferric oxides, in particular hematites, iron slag or the like, in some circumstances also lead pellets. 
     A substantial advantage of the new cable-laying configuration is that, in one embodiment thereof in which the carrier band adjoins more or less fully the inner wall of the channel or pipe with its two lateral edges, it can also in addition assume the function of a type of flat channel sole to stabilize the position of the cable by the at least one continuous weighting body on the underside of the carrier band at the top. This second sole has the advantage that it is more or less even and comparatively smooth, which reduces the friction of water or waste water when flowing through and its flow rate is increased so that the flow cross section reduced by the new cable-retaining configuration deposited on the pipe base or channel base is compensated by the higher flow rate. Furthermore, the clearing operations, which must also be carried out substantially less often, can be facilitated by the flattening obtained with the second sole, since the tendency for thick or solid deposits and precipitates is reduced substantially due to the relatively smooth surface of the carrier band. In addition, there is the further advantage that fine (sludge) particles contained in the waste water reach below the carrier band in spite of the adjoining of the lateral edges to the pipe interior and that, in the course of time, all cavities present there between the underside of the carrier band and pipe base become clogged and ultimately form a compact fill substance which further increases the friction fit between the configuration and the sewer pipe substantially contributing to the stabilization of the position, as already discussed above. 
     With respect to the connection of the carrier band with the weighting body or with its retaining elements, this can be accomplished by a simple screwing or by adhesion, (plastic) welding or the like. 
     Within the meaning of the invention, it is especially advantageous if, the weighting body is connected to the underside of the carrier band and attached by the same clamp-like or jaw-like weighting body retaining elements. 
     At this point, it is stressed that it is in no way imperative that the carrier band be configured “flat”. 
     In particular for the case that the cables, fiber optic cables or the like are only to be laid in a section of a sewer pipe, i.e. that these cables are laid via an vertical shaft into the sewer pipe and then placed, together with the continuous weighting body, extending under the carrier band and then led upward after a certain path out of the channel via a shaft, i.e. from below the carrier band upward, it is advantageous if a dry-weather gutter is inserted into the carrier band, preferably in the middle, which is advantageously configured in such a way that its underside lies on the pipe base or on the channel sole, at least indirectly. In this case, cable holders and weighting body retaining elements are then configured in such a way that the cables are each arranged—for the most part on both sides—on the side of their dry weather gutters under the carrier band. The purpose of the gutter in the carrier band is now described. 
     Of course, since the carrier band is disposed only along a section of the sewer pipe where the cables are laid, and the carrier band is however arranged at a distance above the channel sole or channel base, inclined ramp sections which ascend onto the carrier band and again descend from the carrier band back to the sole or base are arranged at the start and at the end of the laying path. 
     In the area thereof, especially with low flow rates of the waste water in dry weather periods, sludge and the like is deposited which can lead to disintegrations of the pipe or channel. Due to the dry weather gutter inserted in the carrier band, which forms a type of second sole of the channel, the waste water does not have to overcome the just mentioned carrier band inclined ramps and, moreover, a sufficiently high flow rate is ensured there, even with low amounts of waste water in dry weather periods due to the low flow-through cross section as a result of which the aforementioned deposits of sludge or the like are prevented. 
     According to a further simple embodiment, the retaining elements for the weighting body and the cable or cable tube holder for guiding and accommodating the cables or tubes into which cables, in particular optical fiber cables, can be drawn or blown in, can be configured as one piece. 
     A configuration of the weighting body retaining elements or the cable holder already made as one piece with them at uniform distances in the longitudinal direction of the carrier band is advantageous. 
     An advantageous embodiment is for a one-piece weighting body retaining elements and the cable or sewer pipe holder with base plate and weighting body and cable-retaining clamps protruding away from them. With regard to the retaining clamps for the weighting body and for the cables, in particular with regard to the weighting body, it should be noted that it is advantageous if the weighting body is disposed closer to the inner wall of the channel or pipe or even abutting them with its casing section directed downward to the pipe base. However, the ends of the retaining clamps of the weighting body retaining elements have a greater distance to the inner wall surface of the pipe or channel, so that it is certainly prevented that these clamps or the ends of these retaining clamps come into contact with the pipe base when the entire cable-laying configuration is drawn in since, in this case, the friction resistance is increased considerably during the drawing in and therefore the drawing in of the laying configuration results in problems. 
     An especially advantageous embodiment of the configuration of the weighting body retaining elements and the cable or cable pipe holder are advantageously formed as one piece with them. 
     An embodiment of the retaining elements for the weighting body and the cable or cable-pipe holder, which is advantageously integral with them, as double or twin mounting supports are especially advantageous and preferable for drawing the new cable-laying configuration into the channel. 
     As discussed above, to facilitate the longitudinally relative displacement between the carrier band and the weighting body as well as optionally also the cable, due to the various radii of curvature, which occur when the cable is drawn in via the manhole, a lubrication of the weighting body retaining elements and possibly also the cable and cable pipe holder is advantageous. 
     It is advantageous if the carrier band or its band links is/are formed from an elastic material that bends up or down diagonally to its longitudinal extension, in particular of plastic, in particular polyester or epoxy resin, of steel or steel plate or of a plastic/steel composite material. 
     Furthermore, it can be advantageous if, by flanging the lateral edges of the carrier band or the band members forming same, a full, flat fit thereof is obtained with the lateral edges against the inner wall surface of the pipe. 
     With a configuration having a carrier band whose lateral edges are surrounded with an edge-gripping band or the like, preferably made of plastic, drawing the carrier band into the pipe or into the channel with the continuous weighting body can be substantially facilitated by lowering the friction resistance of the lateral edges of the carrier band on the inner wall surface of the pipe or channel. 
       FIG. 22  shows how the carrier band  1 , e.g. of high-grade steel, is drawn into a sewer pipe  9  in the cable-laying configuration  100  according to the invention and is placed in the sewer pipe  9  in such a way that it braces itself with its flanged lateral edges  11  on the concave inner wall surface  92  of the channel on both sides. Four clamping fixtures in total are disposed on the underside of the carrier band  1 , on the right and left of the median plane for continuous bodies extending longitudinally and having an substantially round cross section, namely in the present case, three holders  3  with retaining clamps  33  for mounting cables  4  or cable pipes which are provided for drawing in or blowing in special cables, e.g. optical fiber cables or the like, furthermore, a weighting body retaining element  35  with which continuous weighting bodies  5  which also have a substantially circular cross section are clipped into it in the same manner as the previously noted cables  4  or cable pipes. The weighting body  5  shown here contains a weighting body casing  51  formed from a flexible pipe or tube, e.g. of a polymer material which is filled with a free-flowing material  52  having as high a density as possible, e.g. in the form of sand or pellets. Instead of a continuous two-component weighting body  5  as just described, a “single component” body  5  of this type can be provided which is formed in this case, for example, out of a twisted steel cable. 
     In the case shown in  FIG. 22 , the cable holders  3  and the weighting body retaining element  35  are formed as a dual holder  335  in one piece, whereby a base plate  351  is connected to the underside  101  of the carrier band  1  by screws  102  or the like. The one-piece, spring-flexible cable retaining clamps  33  and weighting body retaining clamps  353  each protrude downward in pairs with it from the base plate  351 . In the configuration  100  shown, the retaining clamps  33 ,  353  disposed between adjacent cables  4  or cable pipes and the weighting body  5  in each case are configured integrally, so to say, in a double function with one another, and only divide at their ends in the shape of a Y. The cables  4  and the continuous weighting body  5  described above are inserted between the aforementioned clamps  33 ,  353  in the manner of a snap-in mounting fixture and are held in position by the forked ends of the aforementioned clamps  33 ,  353 . Furthermore, it can be seen in  FIG. 22  that the slight distance a of the weighting element  5  from the inner wall surface of the sewer  92  is less than the distance b between the ends of the retaining clamps  33 ,  353  from the aforementioned inner pipe wall  92 . It is thus ensured that, in the event that the new cable-laying configuration  100  comes into contact with the inner wall surface  92  of the sewer pipe, that only the weighting body  5  always comes into contact with it, so that the sliding drawing of the new cable-laying configuration  100  into the respective sewer pipe is ensured without great friction losses. Namely, if the Y-like divergent ends of the retaining clamps  33 ,  353  were to reach closer to the inner wall surface of the channel than the weighting element  5 , then these ends would so to say be “pinned” there in a frictional manner on the inside of the channel wall  92  when the new cable-laying configuration  100  is pushed in and in this way resist being drawn into the channel. 
       FIG. 23  shows (with the otherwise same reference numbers) a preferred embodiment of the retaining elements  3 ,  35  within the scope of the invention, in the form shown in  FIG. 22  of the dual holder  335  for the weighting body  5  and for the cables  4  or cable pipes in detail. It is shown how a base plate  351  is disposed on the underside  101  of the carrier band  1  formed with articulated band links  10  by axis Δ from which two series of weighting body retaining elements  35  and cable or cable pipe holders  3  with their respectively common retaining clamps  33 ,  353  protrude in longitudinal direction of the carrier band  1 , shown by an arrow, each behind one another, between which the cables (not shown here) and the continuous weighting body (also not shown) are ultimately inserted. 
     In the embodiment of the configuration  100  according to the invention shown in a rough outline in  FIG. 24  (with otherwise the same reference numbers), the carrier band  1  contains band links  10  flexibly connected to one another via articulated joints. The cable holder  3  and the weighting body retaining elements  35  are disposed with the two series of the retaining clamps  33 ,  353  protruding away from the base plate  351  of the dual holder  335  at the axis Δ of the articulated joints shown. Furthermore, it is shown with dash-and-dot lines what the position of the holder  335  is when the carrier band  1  deforms vertically when the new cable-laying configuration is drawn into a channel. A continuous holding and guiding of the cable and weighting body is ensured by the dual holder  335 . Since the holder  335  is formed from an inherently hard, yet simultaneously flexible material, it can so-to-say also carry out the curvature, in particular also with a concave curvature of the carrier band  1 , and thus also ensures a continuous run of the cable and the weighting body along the carrier band when the new cable-laying configuration  100  is drawn into a channel. 
       FIG. 25  schematically shows in a top view (with otherwise the same reference numbers) the cable-laying configuration  100  according to the invention with a laterally, yet not vertically up and down bendable carrier band  1 , e.g. made of steel, in a straight pipe section. 
       FIG. 26  shows a laterally deflected carrier band  1  formed with similar, articulated band links  10  in the curvature of a sewer pipe  9  and  FIG. 27  a carrier band  1  formed with articulated band links  10  and a longer straight section, that cannot be laterally deflected, in a straight section of a sewer pipe  9 , which then passes into a curvature. 
       FIGS. 28 and 29  show (with otherwise the same reference numbers) an additional or auxiliary device advantageous for use within the scope of the configuration  100  according to the invention for the cable-laying process. It contains a cable draw-in auxiliary train  70  formed with several link wagons  7 . The link wagons  7  are each configured with a wagon body  74  having an axle  701  which supports a pair of wheels  71  that are spaced from one another on the outside and provided for moving the auxiliary train  70  in the sewer pipe  9 , and two independently rotatable carrier band supporting rollers  75  disposed between them. The carrier band  1  carrying the weighting body  5  and the cables  4  on the underside can be placed on these supporting rollers  75  and drawn into the respective sewer pipe  9  with little resistance. 
       FIG. 28  shows two link wagons  7  articulated to one another via a guide pole  73  and a lock hinge  731  or the like in a top view. 
       FIGS. 30A and 30B  show (with otherwise the same reference numbers) how first the ensemble  1 - 3 , 35 , 4 - 5  of the carrier band  1 , cable support  3 , weighting body retaining element  35 , cable  4  and weighting body  5  are first moved into the sewer pipe  9  on the supporting rollers  75  of the link wagons  7  coupled to form a cable draw-in auxiliary train  70  and how the ensemble  1 - 3 , 35 , 4 - 5  is ultimately placed in the sewer pipe  9  when the auxiliary train  70  is pulled away under the ensemble  1 - 3 , 35 , 4 - 50  held in longitudinal position by a guide rope  134  or the like. 
       FIG. 31  schematically shows (with otherwise the same reference numbers), in a top view, the cable draw-in auxiliary train  70  as it is just in a curvature of a sewer pipe  9 . 
       FIGS. 32A and 32B  schematically show (with otherwise the same reference numbers) a further auxiliary device provided to assist in the laying process, namely a tube body  8  which can be filled with air at increased pressure, which, after the ensemble  1 - 3 ,  4 - 50  has been deposited for a position-accurate immobilization and for pressing them to the pipe base  91  prior to and during the introduction of the weighting material  52  into the interior of a weighting body casing tube  51 . If the weighting material  52  is inserted there, then its mass or weight is sufficient for the ensemble  1 - 3 , 35 , 4 - 5  to remain in its weight-stabilized position and the tube body  8  can then be unloaded and brought to a different place for positioning of the just mentioned ensemble  1 - 3 , 35 , 4 - 5  where the next in-situ filling with weighting material  52  takes place. 
       FIG. 33  shows (with otherwise the same reference numbers) an embodiment of the carrier band  1  of the configuration  100  according to the invention which is not flat but configured with a dry weather gutter  110  disposed in the middle and here lies on the pipe base  91  with insertion of the weighting body retaining element  35  formed with a base plate  351  adapted to a corresponding cross sectional shape and made in one piece with the cable holder  3 . 
     A continuous weighting body  5  is disposed on both sides of the gutter  110  in the free spaces there between the underside of the carrier belt  101  and the inner wall surface of the pipe  92  as well as on both sides of the cables  4 . The small drawing within  FIG. 12  schematically illustrates a position of the configuration  100  according to the invention where it ends within the sewer pipe  9  and e.g. a cable  4  is led upward from below the carrier band  1  through a lateral recess therein, out of it and into a manhole of the like (not shown in greater detail). 
     At its end, the carrier band  1  passes over into an end ramp  111  leading downward diagonally to the pipe base  91 . It can be seen in the drawing how the dry weather gutter  110  is continued more or less at the level of the pipe base  91  and the waste water does not therefore have to overcome the end ramp  111  when only small amounts occur in dry periods, and it is thereby avoided that sludges or the like collect and can perhaps result in obstructions in the area of this ramp  110  due to too little amounts of waste water and flow rate. 
     The cable-laying configuration according to the invention is characterized in that such a high proper mass is given to the links of the carrier band itself, i.e. that they are themselves so “heavy” that no additional steps must be taken for the stationary and stable positioning—and remaining in position—even during high waste water flow rates in the channel, e.g. during bad weather, i.e. no anchoring is required in the waste water pipe or channel wall, but also no weighting elements that ensure that they remain in position once the cable has been placed in the channel, but that it is assured solely by the specific gravity of the carrier band or the ensemble of carrier band and cables or the like fastened to it on the underside. 
     A second feature of the invention is in the configuration of the central gutter inserted in the carrier band. An advantage of the central gutter in the carrier band, which ensures that it remains in position, is now described. 
     The carrier band braces itself with its lateral edges—weighted by specific gravity—on the opposite concave inner surfaces of the respective (waste) water pipe or channel on both sides and thus offers quite a substantial resistance to a change in position of the carrier band and the cable or the like extending below it. 
     Furthermore, the great advantage of the carrier band abutting the inner walls of the channel in a highly friction resistant manner on both sides by specific gravity in the described manner is that it forms a type of second sole of the channel which is disposed above the pipe base or the channel sole and in this way offers little opportunity for sludge or deposits to settle. 
     Nevertheless, of course, the carrier band is only disposed along a section of the sewer pipe there where the cables or the like are actually laid and, however, the carrier band is disposed at a distance above the channel sole or the channel base, as just described, so that the channel water flow ascends, so to say, on the carrier band at the start of the laying path and then should descend again at the end thereof from the carrier band back to the channel sole. In particular at the start of the laying path, sludge and the like is deposited at low flow rates of the waste water, e.g. in warm-rain dry weather periods, which can ultimately lead to disintegration of the pipe or channel. Due to the central gutter inserted in the carrier band, forming a type of second sole of the channel, which forms a dry weather gutter, the waste water does not have to overcome the difference in height between the channel sole and carrier band level, but can continue to flow at the same level, and, moreover, even with low amounts of waste water in dry weather periods, a sufficiently high flow rate is ensured by the central gutter due to their small flow-through cross section, as a result of which the deposit of sludges or the like is prevented. 
     In the course of exhaustive tests in practice, it was found that an especially high specific gravity of the carrier band is not required to ensure a weighting that guarantees the fixed position of the laid cable, but that already relatively small differences between the (low) density of the (waste) water flowing in the channel and the (higher) “average density” of the carrier band cable ensemble in the range of 3 and 25 percent is definitely sufficient for obtaining this objective. 
     An embodiment of the invention brings the advantage that only a very slight, i.e. almost no “graduation” is given which promotes undesirable obstructions between the actual pipe base and the bottom of the central gutter of the carrier band. 
     To increase this advantage, it can be advantageous to keep the material thickness of the carrier band links lower, at least on the bottom of the central gutter, than in their shoulder zones. 
     If an “up and down swivel feature” or flexibility of the band links of the new carrier band is provided, then, on the one hand, there is no problem to roll up the carrier band on a spool or drum, which is advantageous, on the one hand, for transport and also for the laying logistics, and, on the other hand, it is easy to handle the transitions during laying from e.g. vertical channel shaft into an essentially horizontally extending sewer pipe. 
     With respect to the flexible connection of the individual band links, limits are only set here due to a too high expenditure during production of the carrier band and by the formation of possible projections of joints or the like which restrict or disturb the free flow of waste water that could promote obstructions of the channel. 
     A somewhat more expensive and more flexible embodiment of the carrier band, which can however more easily manage “horizontal” lateral curvatures in channels, which is based thereon that, although the band links on the longitudinal filaments connecting them to the carrier band are heavy to a slight extent, they can be moved relatively well. 
     At this point, it should be noted that the dimensions of the band links that have proved successful in practice have e.g. 20-50 cm or 25-35 cm in length and that the distances thereof from one another can be between 2 and 10 mm, in particular 2 to 50 mm. 
       FIG. 34  shows how the carrier band  1  formed with the band links  10  placed in a row along one another and here articulated by of rings  102  is deposited with a proper mass Em producing its “self-weighting” in the new cable-laying configuration  100  in a sewer pipe  9 . The cross section of the carrier band  1  or of its band links  10  shows flat shoulder zones  110 ′ which descend from the two lateral edges  11  adjoining the inner wall  92  of the pipe to the band center or median zone Mz, each extending at the same level height, forming the side zones Sz, which pass over into the central gutter  110  having rounded edges here and a wide U-shaped cross section, the underside of which is shown positioned just above the pipe base  91 . It is often advantageous if the central gutter  110  lies on the pipe base  91  on the underside. 
     Optical fiber cables  4  or the like, laid in the sewer pipe  9  and fastened here by clamp-like cable holders  3  (only indicated here) extend below the two shoulder zones  110 ′ with the width bs. For example, the band links  10  have a link length gl of 25 cm and a distance ag of 2 to 5 mm from one another. 
       FIG. 34  clearly shows the material thickness md or strength of the carrier band  1  forming its own weighting body (Bk) by which the specific gravity thereof is guaranteed which ensures the necessary weighting of the carrier band  1 , cable  4  ensemble, suppressing undesirable displacements of the cable  4  in the waste water and the uplift through the waste water flow. 
       FIGS. 35A ,  35 B and  35 C show (with otherwise the same reference numbers), in views from the bottom, from the side and in section, a short section of a carrier band  1  according to the invention whose band links  10  are joined by e.g. spot welding, on the bottom on the same joined (endless) steel band ( 500 ).  FIG. 35B  shows the mutual “up/down flexibility” of the band links  10  of the carrier band  1 . 
       FIGS. 36A ,  36 B and  36 C show (with otherwise the same reference numbers), in a view from the bottom, from the side and in section, how two steel cables  500  provide the flexible connection of the band links  10  which are interconnected on the underside with the band links  10  via retaining clamps  501  which surround these cables  500  with a higher frictional resistance. Thus, the band links  10  are not fixed but can be moved on the cables  500  with more or less resistance and in this way also enable, as  FIG. 36A  shows, a lateral curvature or bending of the carrier band  10 . 
       FIG. 37  schematically shows (with otherwise the same reference numbers) the unwinding process when laying cables using the carrier band  1  according to the invention from a cable-laying drum Vt in a manhole Ks (diagonal here). The carrier band  1  with its band links  10  is wound on the drum Vt in such a way that it points outward with its underside Us or that it points or they point radially outward into the same inserted central gutter  110 . 
       FIGS. 38 and 39  show advantageous further developments of the invention in which the carrier band  1 , in the event that it does not have sufficient proper weight or density of the material forming it, it is constructed with articulated, flexible or the like carrier band links  10  having an outer contour Ka on the underside corresponding to the inner cross sectional contour Ki of the pipe  9 , channel or the like, adapted essentially to the same form, for a close fit on the channel or pipe base  91 , and that at least one of the shoulder zones  110  on both sides is configured with chambers  120 ,  130  closed by a bottom wall  119  each which is formed according to the aforementioned outer contour Ka in the form of a downward direction, from which the cable running chamber(s)  120  are open on both sides the configuration of the cables  4  or the like to be laid in direction of the longitudinal extension of the carrier band and which, preferably, form a longitudinal wall  132  together with the just noted cable-running chamber(s)  120  which have weighting chamber(s)  130  which are substantially closed on all sides and with a filling hole  131  which is preferably closable or sealable so as to be watertight and weighting bodies having a density exceeding the density of water by at least 50% and, preferably, a density of more than 2.5 g/cm 3 , as filled at least partially in particular with tube of heavy minerals such as barium oxide, hematite, iron or the like.