Study on Asymmetric Deformation Law and Surrounding Rock Control Technology of High Stress Soft Rock Crossing Roadway

In order to solve the problem of asymmetric large deformation high-stress soft rock crossing roadway under complex geological conditions in deep mines, taking 2# total return airway 76.2# section Wuyang Coal Mine as engineering background, causes and failure mines were summarized analyzed by means field investigation, theoretical analysis numerical simulation, high-efficiency support technology with row spacing was studied. The results show that lithology strata is main cause roadway. shape change not influencing factor roadway, but for control surrounding rock, straight wall semi-circular arch better than rectangular industrial test shows after adopting new design scheme, displacement roof floor reduced 86.39% compared original two sides 86.05% which can ensure normal safe production during service period, provide reference other similar conditions.