断层破碎区动压巷道稳定性分析及支护参数优化  

Stability Controlling Analysis and Support Parameters Optimization of Roadway with Dynamic Pressure in Fault Broken Zone

作　　者：张清清 ZHANG Qingqing(CCTEG Shenyang Research Institute,Fushun 113000,China)

机构地区：[1]中煤科工集团沈阳研究院有限公司,辽宁抚顺113000

出　　处：《煤炭技术》2022年第4期49-52,共4页Coal Technology

摘　　要：以屯宝煤矿1193综放工作面下运输巷围岩煤岩体稳定性控制为目标,通过地质调查、理论分析和现场监测相结合的方式,收集下运输巷围岩煤岩体在动压作用下的失稳破裂信息。通过统计分析法统计分析钻孔裂隙,得出受压巷道的径向失稳范围为2.32 m,通过巷道表面变形特征与帮部应力的变化特征确定巷道纵向的受压范围为3.0~13.0 m,最大值在5.0 m处。依据断层破碎区动压巷道径向与纵向的受压及失稳范围,布置优化了原有的支护参数,保证了下运输巷道的稳定性达到安全开采的目的。Aim to better control the stability of surrounding rock mass of lower transportation roadway of 1193 working face in Tunbao coal mine by quantifying the area of unstable zones using a combination of engineering geology investigation,theoretical analysis,and multi-indicators in-situ monitoring.It is indicated that the radius of the unstable zone of the roadway is 2.32 m and the disrupted zone under transverse compressive stress ranges from 3.0 m to 13.0 m with maximum compressive stress at 5.0 m.Accordingly,parameters were optimized to better control the stability of lower transportation roadway for safe mining.

关 键 词：断层破碎区 动压巷道 稳定性控制 支护优化 

分 类 号：TD353[矿业工程—矿井建设]