摘要
为了有效防治兖州矿区南屯煤矿73上29孤岛工作面发生冲击地压事故,分别利用综合指数法和可能性指数法对工作面冲击地压危险性进行了宏观评价,采用考虑覆岩运动以及采空区煤柱等多因素的耦合分析方法划分了工作面的冲击地压危险区域,并针对不同危险区域提出了大直径钻孔卸压和煤体爆破卸压的防治方案,取得了良好的防治效果。研究成果可为类似地质条件的孤岛工作面冲击地压防治提供一定的借鉴作用。
In order to effectively prevent and control the rock burst accident in 7329 working face of a coal mine in Yanzhou Mining Area,macroscopic evaluation of rock burst hazard in working face is carried out using comprehensive index method and possibility index method respectively.Coupling analysis method considering overburden movement and coal pillar in goaf is used to divide the dangerous area of rock burst in working face,and prevention schemes of large diameter borehole pressure relief and coal burst pressure relief are put forward according to different dangerous areas,achieving favorable prevention and control effects.The research results can be used as a reference for rock burst prevention in island working face with similar geological conditions.
作者
左凌云
ZUO Ling-yun(Zuoyun Changchunxing Coal Industry Co.,Ltd.,Shanxi Coal Import and Export Group,Datong 037000,China)
出处
《煤炭工程》
北大核心
2019年第12期96-100,共5页
Coal Engineering
关键词
多因素分析
孤岛工作面
冲击地压
危险区域划分
覆岩运动
multifactor analysis
island working face
rock burst
danger zone division
overburden movement
