冲击地压煤层巷帮卸压钻孔施工参数研究  

Study on Pressure Relief Drilling Holes Layout Parameters of Roadside in Rockburst Coal Seam

作　　者：史庆稳 崔宏科 吕大钊 潘俊锋[1] 夏永学[1] 王书文[1] SHI Qing-wen;CUI Hong-ke;LV Da-zhao;PAN Jun-feng;XIA Yong-xue;WANG Shu-wen(Tiandi Science & Technology Co ,Ltd ,Beijing 100013,China;Shaanxi Binchang Mengcun Mine Co ,Ltd ,Xianyang 713600,China)

机构地区：[1]天地科技股份有限公司,北京100013 [2]陕西彬长孟村矿业有限公司,陕西咸阳713600

出　　处：《煤矿开采》2017年第6期74-77,共4页Coal Mining Technology

基　　金：国家重点研发计划(2016YFC0801401;2016YFC0801403);天地科技开采生产力转化基金(KJ-2015-TDKC-05);国家自然科学基金(51574149)

摘　　要：结合巷道侧向支承压力的分布特点,理论分析煤层卸压钻孔的作用机制和塑性区发育特点,提出煤层卸压钻孔的"喇叭"状塑性区防冲机理并藉此确定了陕西某矿巷帮卸压钻孔的合理施工深度。基于莫尔强度理论,利用有限差分软件FLAC3D对比分析了具体地质条件下不同间距及不同布置方式的卸压钻孔对巷帮围岩冲击危险区域解危效果之间的差异,并通过现场试验论证了最优施工参数下的卸压钻孔对于防治冲击地压的效果。结果显示,按照研究结果确定的钻孔参数可使试验区域围岩的大能量震动事件大幅减少,大大降低试验区域的冲击危险性。Based on distribution characters of roadway lateral abutment pressure,and pressure relief drilling hole mechanism of coal seam and plastic zone distribution character were analyzed,and‘horn’shape plastic zone rock burst prevention mechanism of pressure relief drilling hole in coal seam was put forward,and then reasonable pressure relief drilling hole depth of roadway side of one coal mine in Shaanxi province was determined Based on Mohr’s failure theory,the difference that pressure relief drilling holes with different interval and different arrangement form to rock burst hazard zone relieving in specific geological situation were studied by numerical software FLAC3D,the results of rock burst prevention and cure with pressure relief drilling hole with the optimal parameters were verified in practical The results showed that macro energy shake incidents were decreased obviously under drilling hole parameters,which determined according studying results,and rock burst hazard of experimental field was decreased obviously

关 键 词：冲击地压煤层 卸压钻孔 施工参数 冲击危险性 莫尔强度理论 

分 类 号：TD324.2[矿业工程—矿井建设]