高瓦斯矿井立井揭煤应力分布模拟及防突措施研究  

Vertical Shaft Uncovering Coal Stress Distribution Simulation of High Gas Mine and Outburst Prevention Measures Research

作　　者：仇海生[1,2] 

机构地区：[1]辽宁工程技术大学,辽宁阜新123000 [2]煤科集团沈阳研究院有限公司,辽宁抚顺113122

出　　处：《煤矿安全》2017年第5期169-172,共4页Safety in Coal Mines

基　　金：国家重点基础研究发展计划(973计划)资助项目(2011CB20120604)

摘　　要：针对立井延伸揭穿高瓦斯15#煤层的安全隐患,分析了立井筒壁与掘进头附近应力分布特征,结合立井开挖的数值模拟分析了筒壁的应力集中区的高度范围H1及x-z平面的横向影响范围L1和掘进头前方的应力集中区的高度范围H2、x-z平面的横向影响范围L2的相应取值范围,针对上述的结论在现场实施了钻孔预排瓦斯与卸压,最终保证了立井成功揭穿了15#煤层。For the safe hidden trouble of vertical shaft extension exposing 15# high gas coal seam, this paper analyzes the vertical shaft wall near head of working face and the stress distribution characteristics, combined with the numerical simulation of the ver- tical shaft excavation, the paper analyzes the height range H1 of the wall stress concentration area and transverse impact scope of the x-z plane Ll and height range H2 in front of heading face of stress concentration and the corresponding value range of L2 in transverse impact scope of x-z plane. According to the above conclusion, drilling gas pre-drainage and pressure relief is carried out at the scene to ensure the shaft to expose 15# coal seam successfully.

关 键 词：高瓦斯矿井 立井揭煤 应力分布 应力集中区 防控措施 数值模拟 

分 类 号：TD713[矿业工程—矿井通风与安全]