| 铁法矿区高瓦斯低透气性煤层群卸压煤层气抽采钻孔布置 |
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| 引用本文： | 王旭锋,张东升,李国君,任廷祥,王晓东. 铁法矿区高瓦斯低透气性煤层群卸压煤层气抽采钻孔布置[J]. 煤炭学报, 2011, 36(8): 1296-1301 |
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| 作者姓名： | 王旭锋 张东升 李国君 任廷祥 王晓东 |
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| 作者单位： | 1.中国矿业大学 矿业工程学院，江苏 徐州 221116；2.中国矿业大学 煤炭资源与安全开采国家重点实验室，江苏 徐州 221008 |
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| 基金项目： | 国家自然科学基金青年基金资助项目(51004101); 中国矿业大学青年科研基金资助项目(2009A001);中国矿业大学人才引进项目 |
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| 摘 要： | 基于铁法矿区高瓦斯低透气性煤层群地质及开采技术条件，采用物理模拟方法系统分析了煤层群不同开采顺序时采动裂隙演化特征，运用CFD（Computational Fluid Dynamics）Fluent分析了U型负压通风条件下采空区瓦斯流动规律，总结了铁法矿区卸压煤层气抽采钻孔布置原则。研究结果表明：回采巷道内侧约在工作面倾斜长度的1/3处为采动裂隙发育区、距回风巷30~80 m范围为高浓度瓦斯富集区。铁法矿区煤层气抽采钻孔布置的原则为：垂直方向上钻孔终孔位置布置在断裂带下1/3处、地面钻井的合理间距不小于100~150 m、沿工作面倾斜方向靠回风巷（1/3~1/2）工作面斜长范围为最佳的钻孔位置。
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| 关 键 词： | 高瓦斯；低透气性；钻孔布置；采动裂隙；CFD |
| 收稿时间： | 2010-11-15 |
Boreholes layout of coal mine methane drainage for high gassy and low permeability coal seams in Tiefa coalfield |
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| WANG Xu-feng,,ZHANG Dong-sheng,LI Guo-jun,REN Ting-xiang,WANG Xiao-dong(.School of Mines,China University of Mining , Technology,Xuzhou ,China,.State Key Laboratory of Coal Resource , Mine Safety,Xuzhou ,.Tiefa Coal Industry Group Corporation Ltd.,Tieling ,.School of Civil,Mining , Environmental Engineering,University of Wollongong,Wollongong ,Australia,.Baoji Qinyuan Coal Mining Group Corporation Ltd.,Baoji .... Boreholes layout of coal mine methane drainage for high gassy and low permeability coal seams in Tiefa coalfield[J]. Journal of China Coal Society, 2011, 36(8): 1296-1301 |
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| Authors: | WANG Xu-feng ZHANG Dong-sheng LI Guo-jun REN Ting-xiang WANG Xiao-dong(.School of Mines China University of Mining Technology Xuzhou China .State Key Laboratory of Coal Resource Mine Safety Xuzhou .Tiefa Coal Industry Group Corporation Ltd. Tieling .School of Civil Mining Environmental Engineering University of Wollongong Wollongong Australia .Baoji Qinyuan Coal Mining Group Corporation Ltd. Baoji ... |
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| Affiliation: | WANG Xu-feng1,2,ZHANG Dong-sheng1,LI Guo-jun3,REN Ting-xiang4,WANG Xiao-dong5(1.School of Mines,China University of Mining and Technology,Xuzhou 221116,China,2.State Key Laboratory of Coal Resource and Mine Safety,Xuzhou 221008,3.Tiefa Coal Industry Group Corporation Ltd.,Tieling 112700,4.School of Civil,Mining and Environmental Engineering,University of Wollongong,Wollongong 2522,Australia,5.Baoji Qinyuan Coal Mining Group Corporation Ltd.,Baoji 72120... |
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| Abstract: | Based on the high gassy and low permeability coal seams geo-conditions and developing technology in Tiefa coalfield,the features of mining-induced fractures with different mining orders,gas migration under U model exhaust ventilation,and boreholes layout of methane drainage were studied by means of physical simulation and CFD(Computational Fluid Dynamics) numerical modeling.The results show that mining-induced fractures are mainly generated on the inside of the retreat drift,around 1/3 along the retreat dir... |
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| Keywords: | high gassy low permeability boreholes layout mining-induced fractures CFD |
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