摘要
针对煤矿掘进面过断层期间支护困难、巷道冒落可能性大的问题,对掘进工作面过断层围岩变形机理及控制技术研究进行了研究。通过理论研究对正断层附近的应力环境进行分析,并通过数值模拟对过断层巷道及正常巷道在不同支护方案条件下的应力、位移状况进行对比研究,最终给出了掘进面过断层的支护方案,并应用到布尔台煤矿的工程实践中。研究结果表明:采用“锚杆+锚索”支护方案来加强支护强度及新增角锚杆可以实现对过断层掘进工作面围岩的有效控制。
Aiming at the problems of difficult support and high possibility of roadway caving during fault crossing in coal mine driving face,the deformation mechanism and control technology of surrounding rock were studied for driving face crossing fault.The stress environment around normal faults is analyzed through theoretical research,and the stress and displacement conditions of roadway crossing faults and normal roadway under different support schemes are compared and studied with numerical simulation.Finally,a support scheme for roadway crossing fault is proposed and applied to the engineering practice of Buertai Coal Mine.The research results show that,the driving face crossing fault can be effectively controlled.using the“bolt+cable”support scheme to strengthen the support strength and adding angle bolts the surrounding rock.
作者
王宏建
WANG Hongjian(CHN Energy Shendong Coal Group Co.,Ltd.,Shenmu 719315,China)
出处
《煤炭工程》
北大核心
2023年第4期71-76,共6页
Coal Engineering
关键词
过断层
围岩控制
联合支护
支护方案
数值模拟
cross fault
surrounding rock control
compound support
support scheme
numerical simulation
