残采工作面回采动压对下覆巷道围岩稳定性影响研究  

The Influence of Mining Dynamic Pressure on Surrounding Rock Stability of Underlying Roadways in Residual Mining Face

作　　者：牛国星 丁新启 NIU Guoxing;DING Xinqi(Pingshuo(Group)Co.,Ltd.,China National Coal Group,Shuozhou036000,China)

机构地区：[1]中煤平朔集团有限公司,山西朔州036000

出　　处：《山西煤炭》2021年第4期29-33,共5页Shanxi Coal

摘　　要：针对平朔集团井工一矿上覆残采工作面回采形成的动压会对下覆煤层巷道围岩稳定性产生影响的问题,本文在巷道生产地质条件调研和围岩地质力学测试与评估的基础上,采用理论分析和微震实测的方式分析了上覆残采工作面回采后底板岩层的应力状态和应力传递规律,总结出适用于井工一矿的底板强度破坏深度预测公式,并提出了下覆煤层巷道围岩加强支护方案和措施,为残采工作面的回采可行性提供了参考依据。The dynamic pressure formed by the overlying residual mining face will have an impact on the stability of the surrounding rock of the underlying coal seam roadway in the No.1 Coal Mine of Pingshuo Group. In response to this problem, based on the investigation on production geological conditions and the testing and evaluation on surrounding rock geomechanics, this paper uses theoretical analysis and microseismic measurements to analyze the stress and stress transfer law of the floor after the overlying residual mining face is mined. In addition, a formula for predicting the depth of floor strength failure is summarized, and the supporting schemes and measures for the surrounding rock are proposed, which could provide a reference for the feasibility of the residual mining face.

关 键 词：残采工作面 动压影响 底板 围岩稳定性 

分 类 号：TD821[矿业工程—煤矿开采]