外错高抽巷卸压瓦斯抽采钻孔测斜与纠偏技术  

Inclination measuring and deviation correction technology of pressure released gas drainage borehole in external dislocated high level gateway

作　　者：王红胜[1] 杜政贤 樊启文[2] 双海清 解俊祥[2] 由临东 

机构地区：[1]西安科技大学能源学院西部矿井开采及灾害防治教育部重点实验室,陕西西安710054 [2]霍州煤电集团有限责任公司李雅庄煤矿,山西霍州031408

出　　处：《煤炭科学技术》2015年第8期77-81,共5页Coal Science and Technology

基　　金：国家重点基础研究发展计划(973计划)资助项目(2015CB251600)

摘　　要：为解决李雅庄煤矿2—603工作面卸压瓦斯抽采钻孔钻进轨迹偏离钻孔原设计轨迹的难题,基于原设计钻孔的测斜结果,提出了角度补偿纠偏方法及钻孔纠偏效果评价指标。原设计151、152号钻孔的测斜结果表明：终孔位置偏斜距离分别为4.203、4.481 m,采用角度补偿纠偏方法后钻孔终孔位置偏斜距离为1.363 m。纠偏后钻孔瓦斯体积分数的最大值和平均值较纠偏前分别提高了15.3%、11.6%,且持续抽采时间增加了1～6 d。纠偏效果表明：该方法基本解决了钻孔偏斜问题,提高了卸压瓦斯抽采效果。In order to solve the drilling trace of pressure released gas drainage borehole offsetting the original design trace of the borehole, based on the inclination measured results of the original designed borehole, an angle compensation and correction method and the evalua- tion index of borehole correction effect were provided.The inclination measured results of the original designed No. 151 and 152 boreholes showed that the deviation distance of the borehole final location was 4.203 m and 4.481 m individually and after the angle compensation and correction method conducted,the deviation distance of the borehole final location was 1.363 m.After the deviation correction conduc- ted,the max value and average value of the borehole gas density was increased by 15.3% and 11.6% individually higher than before the deviation correction conducted, and the continued drainage time was increased by 1- 6 days.The deviation correction effect showed that the method could solve the borehole deviation problem basically and could improve the pressure released gas drainage effect.

关 键 词：外错高抽巷 卸压瓦斯 钻孔测斜 钻孔纠偏 角度补偿 

分 类 号：TD713[矿业工程—矿井通风与安全]