青龙煤矿底板定向钻孔施工分析  

Analysis of Floor Directional Drilling Construction in Qinglong Coal Mine

作　　者：肖丽辉 XIAO Lihui(China Coal Technology and Engineering Group Chongqing Research Institute,Chongqing 400039,China;State Key Laboratory of the Gas Disaster Detecting,Preventing and Emergency Controlling,Chongqing 400039,China)

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆400039 [2]瓦斯灾害监控与应急技术国家重点实验室,重庆400039

出　　处：《煤炭技术》2024年第2期150-153,共4页Coal Technology

摘　　要：针对贵州青龙煤矿低透气性煤层,在21605底抽巷设计底板穿层定向钻孔,进行16#煤层治理瓦斯。首先,根据钻遇地层情况,确定定向钻孔在底板的开孔层位,然后通过分析在施工定向钻孔中出现的问题,对定向钻孔的最初设计进行优化,确保定向钻孔施工顺利,进入目标煤层,并在目标煤层中得到有效延伸,从而进行瓦斯抽采。通过本次施工可知,只有定向钻孔在目标煤层中有效延伸,才可减少抽采盲区,以达到瓦斯治理的效果,为煤矿安全掘进提供保障。For the low-breathable coal seam of Qinglong coal mine in Guizhou,through a directional drilling hole in the bottom plate of the 21605 bottom pumping alley is designed to treat the gas at No.16 coal seams.First of all,according to the formation of the drill,determine the opening layer of the directional drill on the bottom plate,and then analyze the problem of the initial design of the directional drill by analyzing the problems that occur in the construction directional drilling hole to ensure that the directional drilling construction is smooth.Enter the target coal seam and effectively extend in the target coal seam to perform gas pumping.It can be seen from this construction that only directional drilling effectively extends in the target coal seam,only then can the blind spot of extraction be reduced to achieve the effect of gas control and provide guarantee for the safe excavation of coal mines.

关 键 词：定向钻进技术 断层 瓦斯抽采 底板梳状钻孔 轨迹控制 

分 类 号：TD712[矿业工程—矿井通风与安全]