桑树坪煤矿穿层钻孔漏气位置检测及“三堵两注”封孔提浓技术研究  

Research on gas leakage position detection of cross-layer boreholes and "three plugging and two injection" sealing concentration technology in Sangshuping Coal Mine

作　　者：李义强 屈花荣 姚明柱 段晨烨 LI Yi-qiang;QU Hua-rong;YAO Ming-zhu;DUAN Chen-ye(Sangshuping Coal Mine of Shaanxi Shanmei Hancheng Mining Co.,Ltd.,Hancheng715402,China;College of Safety Science and Engineering,Xi′an University of Science and Technology,Xi′an 710054,China)

机构地区：[1]陕西陕煤韩城矿业有限责任公司桑树坪煤矿,陕西韩城715402 [2]西安科技大学安全科学与工程学院,陕西西安710054

出　　处：《煤炭科技》2023年第5期105-109,共5页Coal Science & Technology Magazine

基　　金：国家自然科学基金青年项目(52104222)。

摘　　要：针对桑树坪煤矿3317工作面穿层钻孔“两堵一注”封孔质量差、浓度衰减速度快的问题,确定了穿层钻孔漏气的主要位置,提出了“三堵两注”封孔工艺,并在桑树坪煤矿3317运输巷底板巷进行现场验证。实践结果表明,使用“三堵两注”高效密封技术后效果显著,瓦斯浓度衰减速度明显降低且抽采浓度提高了20%以上,充分验证了该工艺能够加强钻孔的密封性,实现钻孔瓦斯的高效抽采。Aiming at the problem of poor sealing quality and fast concentration attenuation rate of"two plugging and one injection"in No.3317 working face of Sangshuping Coal Mine,the main location of gas leakage in cross-layer boreholes was determined firstly.Secondly,the"three plugging and two injection"sealing process was proposed.Finally,the field verification was carried out in No.3317 transportation and floor roadway of Sangshuping Coal Mine.The practical results show that the use of"three plugging and two injection"efficient sealing technology has a significant effect,the gas concentration attenuation rate is significantly reduced and the extraction concentration is increased by more than 20%,which fully verifies that the process can strengthen the sealing of boreholes and realize the efficient extraction of borehole gas.

关 键 词：穿层钻孔 漏气位置 “三堵两注”封孔 瓦斯浓度 

分 类 号：TD712.624[矿业工程—矿井通风与安全]