Support technology of creep roadway in inclined coal seam under mining influence

HU Xiaolong

doi:10.11799/ce202411008

Abstract：In view of the creep occurred in some areas of the transport roadway of 061601 fully mechanized mining face in Lingxin Coal Mine,the original support scheme cannot control the surrounding rock deformation well.The rock wall 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 regional stress concentration at the end of roadway and near sides of coal pillars is more serious in the stage of driving and recovery.And by increasing the initial supporting force,it plays a positive correlation role in controlling the range of plastic zone of surrounding rock of recovery roadway.After the simulation and comparative analysis of original support and optimized support scheme in multi-stage,it is defined that the optimization of support scheme 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 to 75.84%and 65.49%,respectively,which turned out,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.