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CLAIM OF PRIORITY 
       [0001]    This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C. §119 from applications filed in the Korean Intellectual Property Office on 26 Oct. 2009 and there duly assigned Serial No. 10-2009-0101692. Furthermore, this application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C. §365(c) of my PCT International application entitled ROAD RESTORATION BLOCK filed on 26 Oct. 2010 and duly assigned Serial. No. PCT/KR2010/007350. 
       TECHNICAL FIELD 
       [0002]    The present invention relates to a road restoration block made from rubber, plastic, metal, concrete, asphalt concrete, a synthetic resin, etc., and in particular to a road restoration block which is characterized in that during a construction such as a water and sewage facility construction, a gas supply pipe construction, an electric power supply cable burial construction and a communication facility construction so as to bury a conduit, a cable, a certain structure such as a manhole or something underground by cutting and removing part or all of a paved section of a road, it makes it possible to perform a construction without interfering with the passages of people or vehicles in such a way to easily and safely cover a removed pavement section of a road, thus preventing accidents of people or vehicles while obtaining a safe and good construction environment by limiting a vehicle congestion and dust generation. In addition, a reliable construction and a low construction cost used to occur due to a bad earth tramping work can be obtained in the present invention by providing a tramping function, which results in the saving in nations&#39; budgets. The present invention provides an easier transportation and storage along with an easier construction and disassembling and an easier process and a safe and reliable construction. 
       BACKGROUND ART 
       [0003]    A construction generally conducted on a road relates to a new road construction, a maintenance construction cutting and eliminating part or all of a conventional paved road and an excavating construction for burying underground a water and sewage conduit, a gas supply pipe or a communication cable at a road. 
         [0004]    In terms of a burying construction of a water and sewage conduit or a gas pipe which is a representative one among many construction types, a road paved with asphalt concrete, concrete, block, etc. is cut by a certain width, and the paved section between the cut sides is removed, thus performing an excavation work. An excavation work is conducted until a certain depth, and sand is poured into the excavated portion and a water and sewage conduit or a gas pipe is buried and a good quality soil is covered thereon to reach a certain height. After that, aggregate is paved to make a freezing prevention layer and a pavement material such as asphalt concrete, concrete or block is paved thereon, thus finishing a pavement restoration work. 
         [0005]    In the middle of the earlier-mentioned construction, people or vehicles are guided to walk or run on a section where a paved section is removed for construction or a section where a pavement restoration is not finished while a burial construction of a conduit or a cable is finished. In terms of the current construction method, a safety facility such as a safety fence, a rubber cone, etc. is installed at both sides of an excavated section, and the section where a burial construction is finished is temporarily paved with aggregate to have a height higher than a pavement height before construction, and a temporal material such as a nonwoven fabric and a wooden plate is covered thereon, thus making people or vehicle walk or run thereon. The section where a pavement is removed for construction does not have any safety facilities, so people or vehicles are free to walk or run; however in the earlier mentioned method, a section for a pedestrian passage or a vehicle passage is made narrower, which leads to interfering with the flow of people or vehicles. Since a temporal material can be easily destroyed, the ground can be exposed, thus generating a lot of dusts. The ground might become protruded owing to the subsidence or erosion which generally occurs since people or vehicles repeatedly walk or run thereon or by means of rain, thus causing accidents of people or vehicles. Since the section from which the paved section is removed for construction does not have any safety means, it might be dangerous. The compensation or law suit due to the accidents delays the construction. 
         [0006]    The temporal materials such as a nonwoven fabric or a wooden plate are not able to prevent the input of rain in a construction site when it rains, so the water content of the earth increases, which make impossible the ground tramping work. Part of the construction site might be subsided or eroded, thus forming a groove or a water puddle. The earlier-mentioned temporal materials are not good for the safeties of differential settlement sections, and since they are not visually visible at night, the accidents to people or vehicles might accordingly increase. 
         [0007]    The temporal materials installed at the removed paved section might be easily torn away as people or vehicle repeatedly walk or runs thereon, so the aggregate or ground surface is exposed, thus generating a lot of dusts. In the event that a long time is needed until the pavement restoration, maintenance works are frequently needed, so over consumption of workers and materials increase, and the construction sites are dirty, which make a city environment look unclean. 
         [0008]    The installation of the manhole connecting the underground space and the aboveground space is necessary, which enhances the functions of an underground-buried facility and the maintenance in terms of a variety of road constructions. 
         [0009]    In the event of the evacuation work, an evacuation width is determined by considering the kinds of an underground-buried facility such as a water supply conduit and a sewage conduit, the standard and type of a manhole based on the size (diameter) of the underground-buried facility, the burying depth based on the distance from the aboveground, the condition of a road where a burial facility is installed, and a work stability. 
         [0010]    The types of the evacuations of the manhole parts are diversified. The cover of the manhole mounted on the top of the manhole is not always mounted at the same position. Its position is determined based on the position and direction of the installation of the manhole, so it is hard to provide a customized cover of the manhole, which causes the lack of a management and a safety measure, thus resulting in more accidents near the manhole. The accident happening near the manhole might bring in a big accident, so a proper measure to such accident is urgently needed. 
         [0011]    As described earlier, the aggregate constructed higher than the conventional paved road is needed to be removed depending on the depth of the pavement during the pavement restoration, so the pavement restoration should be performed by paving a pavement material in a state that the ground is fully tramped using equipment such as a roller and a rammer. At this time, the removed aggregate is hard to recycle, thus causing a lot of material consumption. The construction costs a lot since more equipment and workers are provided. In the case of the center of the city, the restoration should be finished within one day. In this case, the pavement restoration costs a lot in the event that the construction section is short, so a construction company might have a lot of financial burden. 
         [0012]    Even when the pavement section to be paved is fully tramped, subsidence might occur due to additional tramping work as subsidence naturally occurs or vehicle repeatedly runs on the road after the pavement is finished. In particular, the ground near the cut section of the road is weak for a tramping work, almost construction defects occur at the sections. When a construction defect occurs, additional maintenance is needed, which leads to increasing the cost of construction. 
         [0013]    A temporal pavement is performed to reduce the construction defects which occur due to the secondary tramping work. In case of the temporal pavements, since it is needed to remove the temporal pavement materials for a main pavement, a lot of construction wastes occurs, which results in a lot of resource consumptions and environment destruction, thus consuming nation&#39;s finance. 
       DISCLOSURE OF INVENTION 
       [0014]    Accordingly, it is an object of the present invention to provide a road restoration block which overcomes the problems found in a conventional road excavation construction in which a lot of safety construction expenses are needed, and a vehicle and pedestrian are hard to pass in a construction section, and a bottle neck phenomenon occurs. 
         [0015]    It is another object of the present invention to provide a road restoration block which overcomes the problems found in a conventional art in which non-uniform grooves are formed as the floors easily sink when a cover is constructed using a temporal material such as a nonwoven fabric or a wooden plate at a construction site of a road, so various accidents occur when people or vehicles walk or run on the road. 
         [0016]    It is another object of the present invention to provide a road restoration block which overcomes the problems found in a conventional art in which a pass is hard in the event that a construction site of a road is covered using a temporal material such as a to nonwoven material or something, and a city environment is worsened, and the cover is easily torn or damaged, which brings in frequent maintenances, and a lot of dusts occurs as the ground surface is exposed due to the above damages. 
         [0017]    It is another object of the present invention to provide a road restoration block which overcomes the problems found in a conventional art in which a penetration of rainwater is not prevented in the event that a construction site of a road is covered using a temporal material such as a nonwoven fabric when it rains, and a water content of the ground increases, so a tramping work is impossible, and a subsidence and a safety problem occur. 
         [0018]    It is another object of the present invention to provide a road restoration block which overcomes the problems found in a conventional art in which a temporal material such as a nonwoven fabric or something is not visible at night when people or vehicle pass. 
         [0019]    It is another object of the present invention to provide a road restoration block which overcomes the defective construction problems found in a conventional art in which a subsidence occurs due to a defective tramping work under a hard construction condition of a road. 
         [0020]    It is another object of the present invention to provide a road restoration block which overcomes the problems found in a conventional art in which there is not provided a proper safety measure at a manhole part of a construction site of a road. 
         [0021]    It is another object of the present invention to provide a road restoration block which overcomes the problems found in a conventional art in which a temporal pass is made possible by paving an assistant base layer (aggregate) higher than a conventional paved height for a pass over an excavated section at a construction site of a road, and it is re-excavated during pavement restoration with additional equipment. 
         [0022]    It is another object of the present invention to provide a road restoration block which overcomes the problems found in a conventional art in which a lot of waster is produced in the event that a temporal pavement is performed for a pass over an excavated section at a construction site of a road. 
         [0023]    To achieve the above objects, there is provided a road restoration block comprising a plurality of blocks which are inter-engaged with each other to cover a road construction site of an excavation construction of a road, thus forming a temporal pavement surface, each block being characterized in that an engaging protrusion is formed at one side for an inter-engagement in a horizontal direction, and an engaging groove is formed at the other side of the same; and a tramping part which is provided at the bottom of each block for tramping the ground of a construction site. 
         [0024]    The engaging protrusion is implemented either in a construction that an upper surface of the block body is continuously protruded in a lateral direction, and the engaging grove is so formed in a stepped groove shape so that the engaging protrusion can mount at the opposite side of the block body or in a construction that a lateral central portion of the block body is protruded, and the engaging groove is grooved at the block body of the opposite side of the engaging protrusion. 
         [0025]    An engaging shoulder is so formed at both sides of the engaging protrusion that a lengthwise engaging force can be enhanced by engaging the blocks in a horizontal direction, and an engaging groove hooked by the engaging shoulder is formed at a central portion of the engaging groove, and a slipperiness prevention protrusion of the engaging protrusion is formed in a horizontal direction when engaging the blocks, and a slipperiness prevention groove is formed at the engaging groove corresponding thereto. 
         [0026]    The block according to the present invention is characterized in that the blocks in upper and lower directions are prevented from disengaging as an engaging protrusion and an engaging groove are engaged so that a subsidence causing non-uniform protrusions at a construction site can be prevented, and the blocks in left and right directions are prevented from disengaging as an engaging shoulder and an engaging groove are engaged, and one block serves to accommodate two different blocks, and the one block also serves to be accommodated by two different blocks, thus producing a strong engaging force, the engaging force of which helps maintain a flat surface at a construction site in which a lot of blocks is installed. 
         [0027]    The preset invention is characterized in that an end support block and a length adjustment block are engaged at both sides of a block, thus fully covering a cut surface of a road. 
         [0028]    The present invention is characterized in that there is provided an intensive tramping plate protruded in the same direction as a cut surface of a road below an end support block and a length adjustment block which are engaged at both sides of a block. 
         [0029]    The present invention is characterized in that there is provided a connection hole into which either a rod or a wire is selectively inserted for an inter-engagement of blocks in a vertical direction. 
         [0030]    The present invention is characterized in that a slipperiness prevention protrusion on a surface of a block, the protrusion being selected from between a curved surface and a plane surface. 
         [0031]    The present invention is characterized in that a groove is formed in a direction perpendicular to a cut surface of a road, thus guiding the flow of rainwater on the surface. 
         [0032]    The present invention is characterized in that a colored or fluorescent material might be coated on a surface of a block for better visibility at night or a night recognition tape or sticker might be attached or a light emitting member such as a LED with a light detection sensor might be inserted into a groove, thus providing better visibility at night, the light detection sensor being designed to operate only at night or during rainy, snowy or cloudy day. 
         [0033]    The present invention is characterized in that there is provided a circular or polygonal weight-reducing hole for reducing the weight of the block. 
         [0034]    The present invention is characterized in that a manhole block according to the present invention comprises a manhole cover block accommodating a manhole cover support, a manhole slab block having the same outer shape and size as the manhole and accommodating the manhole cover and the manhole cover block, thus covering the top of the manhole slab, and a corner block covering a heteromorphy space formed due to the difference between the straight cover surface and the circular manhole installation surface as a rectangular block is installed. 
       Advantageous Effects 
       [0035]    According to the road restoration block of the present invention, it is light and easy to move and install and disassemble, thus utilizing the same in safe as compared to a conventional road restoration panel (restoration plate) which is hard to move and install and heavy. 
         [0036]    According to the road restoration block of the present invention, it is easy to install a disassemble and has a strong engaging force, so it is possible to prevent accidents which might occur due to a subsidence, in such a way to cover a non-uniform road surface of a road construction site in a flat shape, and the present invention provides an easier night recognition function, thus allowing people or vehicle to pass in safe. 
         [0037]    According to the road restoration block of the present invention, a good construction site can be made by covering a road construction site, and people living near a construction site might not suffer from flying dusts by preventing dusts, thus obtaining an environmentally friendly work site. 
         [0038]    According to the road restoration block of the present invention, a customized cover welling fitting the positions of a manhole and a manhole cover is provided, so a manhole and a manhole cover can be managed in safe during a construction, which allows people or vehicle to pass in safe. 
         [0039]    According to the road restoration block of the present invention, it does not need to remove an existing material during a pavement restoration in such a way that a construction site of a road is guided to naturally subside by covering the construction site for a long time, so the ground is fully tramped by people and vehicle passing over the construction site. Equipment such as a roller or a rammer is not needed. Since a pavement material (asphalt concrete or block can be directly paved on the ground which is well tramped, material consumptions can be prevented, and construction does not cost a lot. An intensive care for a weakly tramped site is possible, and the construction quality can be greatly enhanced in the resent invention. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0040]    A more complete appreciation of the invention, and many of the attendant advantages thereof, will be readily apparent as the same becomes better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings in which like reference symbols indicate the same or similar components, wherein: 
           [0041]      FIG. 1  is a cross sectional view of a use state of a road restoration block according to the preset invention; 
           [0042]      FIG. 2  is a perspective view illustrating a road restoration block according to an embodiment of the present invention; 
           [0043]      FIG. 3  is a perspective view illustrating another road restoration block according to an embodiment of the present invention; 
           [0044]      FIG. 4  is a perspective view illustrating the top of a road restoration block of  FIG. 2 ; 
           [0045]      FIG. 5  is a perspective view illustrating the top of a road restoration block of  FIG. 3 ; 
           [0046]      FIG. 6  is a perspective view illustrating the bottom of a road restoration block of  FIG. 2 ; 
           [0047]      FIG. 7  is a perspective view illustrating the bottom of a road restoration block of  FIG. 3 ; 
           [0048]      FIG. 8  is a perspective view illustrating a major portion of a road restoration block of  FIG. 2 ; 
           [0049]      FIG. 9  is a perspective view illustrating a major portion of a road restoration block of  FIG. 3 ; 
           [0050]      FIG. 10  is a perspective view illustrating a major portion of a road restoration block of  FIG. 2 ; 
           [0051]      FIG. 11  is a perspective view illustrating a major portion of a road restoration block of  FIG. 3 ; 
           [0052]      FIG. 12  is a cross sectional view illustrating a road restoration block of  FIG. 2  or  FIG. 3  according to another embodiment of the present invention; 
           [0053]      FIG. 13  is a perspective view illustrating a road restoration block of  FIG. 2  or  FIG. 3  according to another embodiment of the present invention; 
           [0054]      FIG. 14  is a cross sectional view of a road restoration block of  FIG. 2  according to another embodiment of the present invention; 
           [0055]      FIG. 15  is a cross sectional view illustrating a use sate of a road restoration block according to another embodiment of the present invention; 
           [0056]      FIG. 16  is a perspective view illustrating a major portion of a road restoration block of  FIG. 15 ; 
           [0057]      FIG. 17  is a perspective view illustrating a major portion of a road restoration block of  FIG. 15 ; and 
           [0058]      FIG. 18  is a perspective view illustrating a major portion of a road restoration block of  FIG. 15 . 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Modes for Carrying out the Invention 
       [0059]    The preferred embodiments of the present invention will be described in details with reference to the accompanying drawings. 
         [0060]    The present invention is directed to providing a plurality of blocks  100  which are engaged with each other and form a temporal pavement surface while covering a road construction site of a variety of excavation constructions of a road. Each block  100  is characterized in that an engaging protrusion  130  is formed at its one side for an inter-engagement in a horizontal direction, an engaging groove  140  formed at the other side, and a tramping part  400  which is disposed at the bottom of the same for a ground tramping of a construction site. 
         [0061]    The block  100  is formed of an engaging protrusion  130  formed along a widthwise direction of a removed pavement surface as shown in  FIGS. 4 and 5  and an engaging groove  140  engaged with the same as shown in  FIGS. 6 and 7 , with at least two blocks  100  being connected in the upper and lower directions or the left and right directions, respectively. 
         [0062]    When engaging the blocks  100  in a horizontal direction, they are engaged in a zigzag shape. An engaging shoulder  131  is formed at both sides of the engaging protrusion  130  for enhancing a lengthwise engaging force, and an engaging groove  141  hooked by the engaging shoulder  131  is formed at a central portion of the engaging groove  140 . As shown in  FIGS. 2 and 3 , each block is engaged in the upper and lower directions without any movements between them. There are provided an end support block  300  supporting the end portion, and a length adjusting block  200  corresponding to the width of the removed pavement surface, thus fully covering the removed pavement surface in a widthwise direction. 
         [0063]    In order to engage the blocks  100  in a vertical direction, a rod or a wire is selectively inserted, and a connection hole  150  is formed to install therein an electric power supply cable  920 . 
         [0064]    When engaging the blocks  100 , a slipperiness prevention protrusion  132  of an engaging protrusion  130  is provided so as to prevent slipperiness in a horizontal direction, and a slipperiness prevention groove  142  is formed at the engaging groove  140  corresponding thereto. 
         [0065]    The blocks  100  are mounted on the ground of a construction site of a road, thus supporting when people or vehicles pass. As shown in  FIGS. 2 and 3 , a slipperiness prevention protrusion  110  is formed on the surface, thus preventing slipperiness when people or vehicles pass. 
         [0066]    As shown in  FIGS. 2 and 3 , left and right rainwater grooves  121  are formed on the surface of each block  100 , thus guiding the rainwater of the surface of the block  100  in left and right directions. When the blocks  100  are connected in upper and lower directions or left and right directions, the right angle direction rainwater grooves  120  formed at a right angle with respect to the cut surface of the road are interconnected, so rainwater of the road with the blocks  100  installed is guided to flow in the excavation direction. 
         [0067]    As shown in  FIGS. 4 and 5 , a night recognition colored material and a fluorescent material is coated on the surface of each block  100  or a night recognition tape and a stocker might be attached. A light emitting member  900  such as a LED or something might be inserted into a light emitting groove  170 , which helps enhance visual recognitions at night. 
         [0068]    The light emitting member  900  such as a LED or something inserted into the surface of the block  100 , as shown in  FIG. 14 , might be designed to operate only at night or rainy, snowy or cloudy day by attaching a light detection sensor  1000  by receiving an electric power from an electric power part  1100  connected with a secondary battery or a cable. A light emitting part protection cover  910  is provided at the upper surface of the light emitting part  900  for protecting the same. A sensor protection cover  1010  might be provided at the upper surface of the light detection sensor  1000  for protecting the same from damages. 
         [0069]    In the drawings, reference numeral  92  represents an electric power supply cable. 
         [0070]    As shown in  FIG. 2 , at least one self-weight reducing hole  160  is formed at each block  100  while not affecting to its functional structure, thus reducing the weight of the block  100 . 
         [0071]    As shown in  FIGS. 6 and 7 , at the bottom of the block  100  is formed a tramping part  400  formed of at least one tramping plate  410  in which a tramping plate upper side  430  coming into contact with the block  100  and a tramping plate lower side  440  having a downsized construction as compared to the tramping plate upper side are formed in a cone shape or a column shape. The tramping plate  410  of the tramping part  400  might be integral with the block  100  or as shown in  FIGS. 12 and 13  might be formed in such a manner that a circular or polygonal tramping plate  410  working like the tramping part  400  is engaged with the lower side of the block  100 . 
         [0072]    In case of the tramping part  400  engaged to the lower sides of the length adjusting block  200  and the end support block  300  engaged to the end of the block  100 , respectively, since the tramping work is not properly performed at the portion, an intensive tramping plate  420  protruded in the same direction as the cut surface of the road is engaged, thus improving the weak tramping. The tramping part  400  is formed of a rectangular tramping to plate  410 , and the rectangular tramping plate  410  and the intensive tramping plate  420  are detachably engaged to the lower side of the block  100 . A tramping plate support part  450  is protruded from the tramping plate upper side  430 , and a disengagement prevention protrusion  460  is formed at an end of the tramping plate support part  450  for thereby preventing disengagement from the tramping groove formed at the block  100 . The tramping plate lower side  440  is formed in a rectangular shape or a circularly protruded shape. 
         [0073]    As shown in  FIG. 15 , in the event of the road construction site where there is a manhole  800 , as shown in  FIG. 16 , at least one space filling block  500  is formed in the same shape as the manhole cover rest at the manhole cover support  820  as long as the manhole cover  810  is provided. 
         [0074]    As shown in  FIGS. 15 through 17 , a manhole slab block  600  having the same size as the circumference of the manhole is provided, thus fully covering the top of the manhole slab while accommodating the manhole cover at a certain angle irrespective of the position of the manhole cover. 
         [0075]    As shown in  FIGS. 15 through 18 , a corner block  700  is formed at a corner of an outer side of the manhole so as to cover a heteromorphy space formed as the straight block is engaged with the circular manhole, thus fully covering the manhole of the construction site. 
         [0076]    The filling block  500 , the slab block  600  and the corner block  700  are formed in to the same shapes as the sizes of the margins varying depending on the sizes of the manhole  800  and are formed in at least one layer. They might be split into at least one piece, thus forming a protruded insertion protrusion  610  and a concave shaped insertion groove  620  at one side of each block, with the protruded insertion protrusion  610  and the concave shaped insertion groove  620  being engaged with each other, and at least one weight reducing hole  160  is formed. 
         [0077]    In particular, a tramping part  400  is selectively formed at the bottom of the corner block  700  so as to tramp the ground near the manhole  600  which is weak to tramp. 
         [0078]    As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Summary:
The present invention relates to a road restoration block for covering eliminated pavements during various road constructions conducted by eliminating some of or the entire existing road pavements, and more specifically, to a road restoration block, which can quickly and safely cover the eliminated pavements by providing blocks that are simply carried, disposed, and disassembled with strong coupling power to the upper part of the eliminated pavements so that people and cars may pass even when the constructions are in progress, thereby providing a safe and pleasant construction environment by preventing the traffic congestion caused by the constructions.