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
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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。Abstract: 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 vertical shaft excavation, the paper analyzes the height range H1 of the wall stress concentration area and transverse impact scope of the x-z plane L1 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.
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[1] 刘宪正,余忠林,华乐,等.立井揭煤抽排瓦斯布孔的几何模型及其可视化[J].安全与环境学报,2013,13(2):173-178. [2] 崔永杰,刘军,李宏.成庄矿4号回风立井揭煤技术的应用研究[J].中国煤炭,2012,38(10):49-51. [3] 周政林,雷洪波,罗培荣.立井揭穿突出煤层综合防突技术研究及应用[J].矿业安全与环保,2009,36(S1):123-126. [4] 国家煤矿安全监察局.防治煤与瓦斯突出规定读本[M].北京:煤炭工业出版社,2015. [5] 程远平,张晓磊,王亮.地应力对瓦斯压力及突出灾害的控制作用研究[J].采矿与安全工程学报,2013,30(3):408-414. [6] 唐巨鹏,杨森林,王亚林.地应力和瓦斯压力作用下深部煤与瓦斯突出试验[J].岩土力学,2014,35(10):2769-2774. [7] 兰永伟,高红梅,陈学华.钻孔卸压效果影响因素数值模拟研究[J].矿业安全与环保,2013,40(3):6-9. [8] 栗海滔,李海涛.底抽巷穿层钻孔预抽技术在长平矿的应用[J].煤矿现代化,2015,30(3):15-17. [9] 余陶,卢平.基于钻孔瓦斯流量和压力测定有效抽采半径[J].采矿与安全工程学报,2012,29(4):596.
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