许彦鹏, 杨万里, 栗海滔,等.钻冲护一体化水力卸压筛管护孔瓦斯高效抽采技术研究[J].河南理工大学学报（自然科学版）,2022,41(4):7-12.

XU Y P, YANG W L, LI H T, et al.Research on high-efficiency gas drainage technology of drilling，hydraulic punching，hole protection integration hydraulic pressure relief screen pipe protection hole[J].Journal of Henan Polytechnic University(Natural Science) ,2022,41(4):7-12.

钻冲护一体化水力卸压筛管护孔瓦斯高效抽采技术研究

许彦鹏1,2, 杨万里2, 栗海滔3, 武新文4, 王斌荣4, 张浩4

1.煤炭安全生产与清洁高效利用省部共建协同创新中心，河南 焦作 454000;2.河南理工大学 安全科学和工程学院，河南 焦作 454000;3.山西长平煤业有限责任公司，山西 晋城 048000;4.中煤昔阳能源有限公司白羊岭煤矿，山西 晋中 045300

摘要:针对瓦斯抽采顺层钻孔水力冲孔造穴塌孔严重，抽采效率低的问题，提出钻冲护一体化水力卸压筛管护孔瓦斯高效抽采技术，并研发钻冲护一体化装置，实现瓦斯抽采顺层钻孔钻进、水力冲孔造穴和不提钻随钻下筛管的一体化施工。现场试验结果表明：钻冲护一体化水力卸压筛管护孔瓦斯高效抽采技术筛管下入率达98％，是原有水力冲孔造穴技术的2.18倍，是普通钻孔的1.96倍；钻孔平均瓦斯抽采纯量达到0.258 m³/min，是原有水力冲孔造穴技术的 1.8倍，是普通钻孔的4.86倍；钻孔瓦斯流量衰减系数为0.016 d^-1，是原有水力冲孔造穴技术的19.4％，是普通钻孔的48.3％。钻冲护一体化水力卸压筛管护孔瓦斯高效抽采技术提出及装置研发提高了筛管下入率，减小了瓦斯流量衰减系数，有效提高了瓦斯抽采效率。

关键词:高瓦斯煤层;瓦斯抽采;顺层钻孔;水力冲孔造穴;钻冲护一体化;钻孔护孔

doi:10.16186/j.cnki.1673-9787.2021030018

基金项目:国家自然科学基金资助项目（51574110）；河南省科技攻关项目（172102310570）

收稿日期:2021/03/03

修回日期:2021/06/29

出版日期:2022/07/15

Research on high-efficiency gas drainage technology of drilling,hydraulic punching,hole protection integration hydraulic pressure relief screen pipe protection hole

XU Yanpeng1,2, YANG Wanli2, LI Haitao3, WU Xinwen4, WANG Binrong4, ZHANG Hao4

1.Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization， Jiaozuo  454000 ， Henan， China;2.College of Safety Science and Engineering， Henan Polytechnic University， Jiaozuo  454000 ， Henan， China;3.Shanxi Changping Mining Group Co. ， Ltd. ， Jincheng  048000 ， Shanxi， China;4.Baiyangling Coal Mine， China Coal Xiyang Energy Co. ， Ltd. ， Jinzhong  045300 ， Shanxi， China

Abstract: In order to solve the problems of serious hole collapse and low drainage efficiency when drilling hydraulically along the bed,the technology of integration of drilling , hydraulic punching and hole protection was developed, which integrated hydraulic cavity making technology and screen pipe protection while drilling, and the drilling,hydraulic punching ,hole protection integration device were developed. The drilling of gas drainage boreholes along the coal seam , hydraulic cavitation and installation of screens while drilling were realized. Field tests showed that the screen installation depth of the drilling, hydraulic punching and hole protection integration technology was 98% , which was 2.18 times that of the original hydraulic cavitation technology and 1.96 times that of ordinary drilling. The average gas drainage scalar volume of the borehole was 0.258 m³/min , which was 1.8 times that of the original hydraulic cavitation technology and 4.86 times that of ordinary boreholes. The gas flow attenuation coefficient of the borehole was 0. 016 d ^-1 ， which was 19.4% of the original hydraulic cavitation technology and 50% of the ordinary borehole. The technology of drilling and protecting integration improved the installation depth of screen pipe， slowed down the gas attenuation and effectively improved the efficiency of gas extraction.

Key words:high gas coal seam;gas drainage;drilling along the bed;hydraulic cave-making;integrated drilling，flushing and protection;drilling and hole protection

钻冲护一体化水力卸压筛管护孔瓦斯高效抽采技术研究_许彦鹏.pdf