Surrounding Rock Failure Mechanism and Control Technology in Deep Mining Roadways

According to the characteristics of large surrounding rock deformation, fast convergence rate and long-term continuous deformation in the deep high stress mining roadway after the excavation support, the failure characteristics and mechanism of roadway were analyzed by taking 3309 working face in a coal mine as the research background. Based on the above research results, control countermeasures of "improving mechanical properties of surrounding rock" and "increasing supporting structure coupling" were proposed. The results of numerical calculation show that the proposed approach can effectively control the development of elastic areas and reduce surrounding rock deformation.