关键词: 围岩蠕变, 塑性软化区, 塑性残余区, 多阶段扰动, 变形监测

Abstract: In view of the creep occurred in some areas of the transport roadway of 071601 fully mechanized mining face in Lingxin Coal Mine, the original support scheme can not better control the surrounding rock deformation. The creep effect and support technology of inclined coal seam roadway are studied by means of theoretical analysis, numerical simulation and field test. It is determined that the stress concentration at the end of roadway and coal pillar is more serious in the stage of driving and mining. And by increasing the initial supporting force, it plays a positive correlation role in controlling the range of plastic zone of surrounding rock of mining roadway. after the simulation and comparative analysis of original support and optimized support scheme under multi-stage, it is determined that after the optimization of support scheme, it can effectively improve the bearing capacity of shallow surrounding rock of roadway and slow down the small range expansion of surrounding rock failure, which shows that the support scheme can effectively improve the anti-deformation capacity of surrounding rock of roadway. In the field application, the optimized support scheme can improve the control ability of the roof and floor and the surrounding rock of the two sides respectively, and the deformation control effect can be improved by 75.84% and 65.49% respectively, that is, the optimized support scheme of the whole roadway is more effective for the control of surrounding rock and provides an important guarantee for mine safety production.