Research On Deformation Mechanism And Supporting Countermeasure Of Soft Rock Roadway Surrounding Rock Within Inclined Rock Strata

With the increment of depth of coal mining, the mining becoming more and more difficult in extremely high stress environment, the stability of the deep soft rock roadway under extremely high stress is becoming more and more attention. Currently, widespread destruction of soft rock roadway deformation and failure to produce a non-symmetrical, mainly because most of the roadway is still widely used, such as intensity-section and symmetry support. Before there is no accurate analysis supporting the weak structure of the site roadway surrounding rock roadway leading to poor results, so that is not able to maintain long-term stability of the roadway confining pressure of exploitation, but also have an impact on coal mining safety in production. Therefore, the main topic of this research on the characteristics and roadway damage Coupling support technology for the above phenomenon.In this paper, theoretical analysis, rock mechanics laboratory testing, field monitoring a combination of deep soft rock tunnel coupling support system research. Using the finite difference method simulation software program FLAC3D coupling support for soft rock roadway numerical analysis to prove coupling support to solve the problem of soft rock roadway scene. Select the track Huainan Mining Group East Second Pan II coal roadway under the high stress environment of a typical tilt rock deep soft rock roadway as a pilot study background. Develop more detailed technical solutions, developed a viable asymmetric deformation parameter coupling control and support through on-site roadway after monitoring to verify the feasibility of supporting measures.According to the asymmetry of soft rock deformation mechanism analysis,the research proposes the use of the roadway coupling support counter-measures. Under ordinary symmetrical anchor net spray form of support for the implementation of key parts of the roadway "grouting anchor+grouting bolt+long bolt" multi-supporting structure coupling support asymmetric way,which allows the support body and the surrounding rock coupling strength, stiffness coupling, the coupling structure to achieve the ultimate realization of the roadway the effects of long-term stability. In this paper, integrate theory with practice, the key parts of the roadway stability is under control, while also providing a practical basis for roadway asymmetric deformation in the future.