Roadway Buckling Mechanism And Supporting Technology Research Under The Conditions Of Dynamic Pressure

Surrounding rock supporting of dynamic pressure roadway has always been one of the difficult problems. With the increased scale of mining, dynamic pressure roadway has become increasingly prominent issue.and Ability to solve the problem dynamic pressure roadway is a mine development and exploitation of the deep key to safe production.In the underground engineering structures, Shell bolting and shotcrete lining process used on the ground forming a special three-dimensional steel bracket instead of an ordinary two-dimensional reinforcement network, downhole assembly and then pouring concrete construction form, with the features.of simple, fast construction, concrete, high strength, quality, easy to guarantee, supporting low-costThis paper analyzes mechanism of surrounding rock deformation and failure of the dynamic pressure roadway,determine the dynamic pressure control principles of roadway surrounding rock, in the analysis of shell anchor spray mechanism of structural control based on the stability of surrounding rock, under the roadway surrounding rock stability classification and control principles to the design support parameters. The use of structural mechanics and the theory of elastic foundation beam and so on shell structure analysis of spray anchor, surface of the shell in accordance with principles of mechanics of the shell structure of bolting and shotcrete lining study, internal force calculation formula is derived. Relying on the lower parking lot Yuan Coal Mine IV 1 compared the application of broken sections, Research Network Shell bolting and shotcrete lining structure, deformation and failure patterns and development of the law, on the shell structure of bolting and shotcrete lining indoor model test. At the same time, According to the model test parameters to establish the finite element numerical model, using finite element software FLAC3D right shell structure of bolting and shotcrete lining numerical calculation and analysis. A typical combination of engineering, field measurement and analysis, shell bolting and shotcrete lining for comparison. Experimental results show that the shell structure of bolting and shotcrete lining has good bearing capacity. Engineering applications show that shell bolting and shotcrete lining all have a good support effect.Papers by shell structure of bolting and shotcrete lining for the shell bolting and shotcrete lining of the theoretical analysis and calculation and structural design and optimization of laying a theoretical basis and foundation, and underground engineering design of supporting structure of the economy reasonably choose to provide a good example.Figure [44] table [8] reference [78]...