高位钻孔瓦斯抽采参数优化技术  

Optimized Technology of High Level Boreholes Gas Drainage Parameters

作　　者：杨永良[1] 李增华[1] 侯世松 刘震[1] 马冬娟[1] 

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221116 [2]煤炭资源与安全开采国家重点实验室,江苏徐州221116

出　　处：《煤矿安全》2012年第11期64-67,共4页Safety in Coal Mines

基　　金：中国矿业大学青年科研基金资助项目(2009A006);国家自然科学基金资助项目(50474067)

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。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.

关 键 词：高位钻孔 瓦斯抽采 采动裂隙带 最佳区域 模拟试验 

分 类 号：TD712.6[矿业工程—矿井通风与安全]