高位定向钻孔抽采瓦斯搭接部位研究与应用  

Research and application of high-level directional drilling holes in gas extraction lap part

作　　者：张明杰[1,2] 邓文博 谭志宏 李旭泽[3] 刘操 袁帅 ZHANG Mingjie;DENG Wenbo;TAN Zhihong;LI Xuze;LIU Cao;YUAN Shuai(School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,China;State Key LaboratoryCultivation Base for Gas Geology and Gas Control,Jiaozuo 454003,China;Dangjiahe Coal Mine,Shaanxi Fuyuan Coal Industry Co.,Ltd.,Fuxian 727500,China)

机构地区：[1]河南理工大学安全科学与工程学院,河南焦作454003 [2]河南省瓦斯地质与瓦斯治理重点实验室—省部共建国家重点实验室培育基地,河南焦作454003 [3]陕西富源煤业有限责任公司党家河煤矿,陕西富县727500

出　　处：《煤矿安全》2024年第5期93-99,共7页Safety in Coal Mines

摘　　要：相邻钻场高位定向钻孔合理搭接是保证抽采瓦斯效果稳定、提高钻孔有效利用率的重要环节。根据顶板裂隙带高位定向钻孔抽采瓦斯机理研究结果,通过分析布置高位定向钻孔空间层位、煤层顶板裂隙带分布特征、钻孔轨迹等抽采效果影响因素,确定了实现成功接替的钻孔合理搭接部位,并在党家河煤矿进行了工程应用。应用显示:80~121 m钻孔搭接长度能够满足瓦斯抽采效果,在搭接部位外端点接替使每个钻孔减少钻孔工程量约40 m。The reasonable lap of high-level directional drilling holes in adjacent drilling sites is an important link to ensure the stable extraction effect and improve the effective utilization rate of drilling holes.According to the results of the research on the mechanism of gas extraction in the high-level directional drilling holes of the roof fracture zone,by analyzing the influencing factors of the extraction effect such as the spatial position of the high-level directional drilling holes,the distribution characteristics of the roof fracture zone of the coal seam,and the drilling trajectory,the reasonable overlapping part of the borehole for successful replacement was determined,and the engineering application was carried out in Dangjiahe Coal Mine.The application shows that the overlapping length of 80-121 m borehole can meet the gas extraction effect,and the outer end of the lapping position can reduce the drilling amount of each borehole by about 40 m.

关 键 词：定向钻孔抽采 搭接长度 裂隙带抽采 钻孔层位 钻孔轨迹 钻孔利用率 

分 类 号：TD713[矿业工程—矿井通风与安全]