摘要
基于采空区顶板"三带"理论,分析了顶板高位定向钻孔技术瓦斯抽采基本原理,对大直径高位定向钻孔代替高抽巷瓦斯抽采技术进行了研究分析,并在新集二矿进行了工业性试验。试验结果表明,在新集二矿220112工作面施工的5个大直径顶板高位定向钻孔的瓦斯抽采量所占比例与高抽巷几乎一样,通过采用顶板高位定向钻孔与底板穿层钻孔、风机巷顺层钻孔、上隅角埋管等瓦斯治理方式相结合,使工作面回采期间回风瓦斯平均为0.34%,未出现瓦斯异常涌出现象,实现了工作面安全开采。
Based on the ＂three belts＂ theory of goaf roof, analyzes the basic principle of gas drainage with high directional drilling in the roof. The research on the technology of replacing high level gas drainage gateway with the large diameter high directional drilling has been carried out and the industrial test has been carried out in Xinji No.2 mine. The test results show that the proportion of gas drainage in the five large-diameter high-directional directional drilling holes in the 220112 face of Xinji No.2 mine is almost the same as that of the high level gas drainage gateway. Through the combination of high-level directional drilling at the roof and drilling through the bottom plate, drilling along the layers of the fan lane and buried gas pipes in the upper corner, so that the return air blasting mine during the average of 0.34%, there is no abnormal gas emission phenomenon, to achieve safe mining face.
作者
肖丽辉
陈鱼
王宽海
孔伟
XIAO Li-hui;CHEN Yu;WANG Kuan-hai;KONG Wei(Chongqing Research Institute,China Coal Technology and Engineering Group Corporation,Chongqing 400039,China;Gas Disaster Monitoring and Emergency Technology National Key Lab,Chongqing 400039,China)
出处
《煤炭技术》
CAS
2018年第11期201-203,共3页
Coal Technology
基金
重庆市科技创新领军人才支持计划(CSTCCXLJRC201709)
"十三五"国家科技重大专项项目(2016ZX05045003-004)
关键词
大直径顶板高位定向钻孔
高抽巷
瓦斯抽采
采空区
新集二矿
工业性试验
large diameter roof high directional drilling
high level gas drainage gateway
gas drainage
goal
Xinji No.2 mine
field tests
