高位钻孔瓦斯抽采参数优化技术
Optimized Technology of High Level Boreholes Gas Drainage Parameters
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摘要: 为确保高位钻孔稳定高效抽采瓦斯,采用相似模拟试验和数值模拟研究了煤层走向开采和倾向开采过程中上覆岩层采动裂隙场、瓦斯场分布特征,查明了在采空区四周采动裂隙发育的分布特征,沿工作面分别将顶板垮落范围划分为3个区域,从而确定了高位钻孔最佳区域。在此基础上,建立了高位钻孔优化设计的流程及体系,通过理论分析得出各参数的确定方法。Abstract: To ensure the steadiness and high efficiency of gas drainage,the resemble simulation and numerical simulation test are adopted to study the distribution characteristics of overlying strata mining fissure field and gas field on the process of cross pitch mining and cross dip mining for coal seam.The distribution characteristics of mining fissure around goaf is identified and the roof caving range is divided into three regions along the working face,it determines the best area of high level boreholes.On this basis,it establishes the optimized design process and system for high level boreholes,obtains the parameters determining methods by the theoretical analysis.
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Keywords:
- high level boreholes /
- gas drainage /
- mining fissure field /
- the best area /
- simulation test
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[1] 刘文军.影响顶板走向钻孔抽放效果的因素分析[J].矿业安全与环保,2004,31(6):48-49. [2] 孙荣军,石智军,吴璋.煤层顶板瓦斯抽放水平长钻孔的设计与应用[J].煤炭科学技术,2008,36(1):38-41. [3] 叶建设,刘泽功.顶板巷道抽放采空区瓦斯的应用研究[J].淮南工业学院学报,1999,19(2):32-36. [4] 王继仁,丁百川,李海涛.瓦斯抽放钻孔优化技术的探讨[J].煤矿安全,2004,35(8):34-36. [5] 周丕昌,刘万伦.高位钻场钻孔在汪家寨煤矿回采工作面瓦斯治理中的应用[J].矿业安全与环保,2007,34(增刊):43-44. [6] 王海锋,程远平,沈永铜,等.高产高效工作面顶板走向钻孔瓦斯抽采技术[J].采矿与安全工程学报,2008,25(2):168-171. [7] 沈光寒,李白英,吴戈.矿井特殊开采的理论与实践[M].北京:煤炭工业出版社,1992. [8] Behr Aron,Mtchedlishvili George,Friedel Torsten,et al.Consideration of damaged zone in a tight gas reservoir model with a hydraulically fractured well[J].SPE Pro-duction and Operations,2006,21(2):206-211. [9] 周世宁,林柏泉.煤层瓦斯赋存与流动理论[M].北京:煤炭工业出版社,1999. [10] XU Jialin,QIAN Minggao.Study and application of the o-shaped circle theory for relieved methane drainage[J].Mining Science and Technology,2002(99):113-116. [11] 钱鸣高,许家林,缪协兴.煤矿绿色开采技术[J].中国矿业大学学报,2003,32(4):343-348. [12] 程庆迎,黄炳香,李增华.利用顶板冒落规律抽放采空区瓦斯的研究[J].矿业安全与环保,2006,33(6):54-57.
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