Patent RU-2607824-C1 (RU)
Title: Method of vertical and inclined workings driving and supporting and guard system for its implementation
Inventor: BUZOV Gennadij Semenovich
IPC: E21D9/06
Filed: 2015-07-16
Granted: 2017-01-20
Abstract: FIELD: construction. 
     SUBSTANCE: invention relates to underground construction at construction of vertical and inclined deep level openings. This is achieved by fact, that in method of vertical and inclined workings driving and attachment, which involves ground development and excavation in bottomhole zone, movable formwork installation, supply of concrete mixture in space formed by guard outer skin and formwork, concrete mixture compaction and support erection, according to invention support erection is performed in cycles, successively erecting sections of monolithic-compacted concrete with number of passes, providing further installation of one or two rings from cast iron tubings or reinforced concrete blocks, wherein concrete mixture supply until press chamber complete filling is performed with control of intensity and uniformity with concrete-conveying pipes overlapping after filling by means of controlled gates, which are regularly arranged along inner formwork circumference at pressure ring working stroke end, and then concrete mixture squeezing is performed in upward direction from press chamber with support onto rock and with formation of press-concrete support next pass. To implement method guard system is used including housing, rock-destructing working element, rock delivery mechanism, support erection mechanism, according to invention as destructing working element rotor type working member is used, which is made cone-shaped and rigidly connected with central hollow shaft, which is connected with gear wheel and driven into rotation by several hydraulic drives, gears, which come into engagement with gear wheel, driving rock destruction element with central shaft into rotation, wherein loosened rock delivery mechanism is located inside hollow shaft and made in form of screw, which lower end is pivotally supported against starting borer structure from rock destructing working element, and upper is connected with hydraulic drive arranged on guard housing horizontal flange, and guard inner housing lower part panel is also made cone-shaped and arranged at angle to central shaft, in lower part having of openings to receive loosened rock with its penetration into screw, and on guard housing conical part inner surface corrugated plates from abrasion and wear resistant and high-strength steel are arranged to increase working surfaces durability and efficiency during grinding of large pieces of rock, wherein screw in upper part is connected with for rock receiving hopper, and on guard housing upper tier in its central part tubbing erector is installed, having rotary platform installed on table with rollers and hydraulic drive, rigidly connected with central post, wherein on rotary platform telescopic handle with cast iron tubings or reinforced concrete blocks grip is arranged, wherein guard system has pressing chamber connected with hydraulic cylinders and equipped with pressing ring, at least, three controlled gates with concrete-conveying pipes uniformly arranged along inner formwork circumference, and on pressing chamber inner surface air valves are arranged, along circumference between concrete-conveying pipes gates for removal of air counter pressure when the pressing chamber filling with concrete mixture. 
     EFFECT: technical result from use of invention consists in improvement of support reliability and durability, as well as works production safety with reduction of shafts construction time with significant reduction of material and labor costs. 
     2 cl, 2 dwg