下向穿层瓦斯抽采钻孔新型封孔方法及应用  

New hole sealing method and application for gas extraction by downward cross-layer drilling

作　　者：戎立帆 柏发松[3] 车志飞 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001 [2]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201 [3]淮南矿业集团潘三矿,安徽淮南232001

出　　处：《中国安全生产科学技术》2014年第8期64-68,共5页Journal of Safety Science and Technology

基　　金：煤矿安全开采技术湖南省重点实验室开放基金项目(201306)

摘　　要：潘三煤矿17181(1)运输顺槽顶板岩层含水丰富,下向穿层钻孔抽采17181(1)运顺瓦斯受岩层富水影响较大。为解决这一问题,结合潘三矿11-2煤顶板实际情况,分析了影响下向穿层钻孔抽采瓦斯的主要因素,提出了"先区域封水,后打抽采钻孔,再利用‘两堵一注’快速封孔法封孔"成套技术解决方案,形成了一种新型下向穿层瓦斯抽采钻孔封孔方法。经潘三矿17181(1)瓦斯综合治理巷现场实践证明,下向穿层抽采钻孔的瓦斯抽采纯量与抽采浓度均有大幅度提高,钻孔封孔效果良好。The roof strata of 17181（1） cross heading in Pan San coal mine contains water richly , for this reason, the gas is difficult to be extracted from the coal of 17181（1） cross heading through downward cross-layer drilling. In order to solve this problem , with the practical situation of roof strata of 11-2 coal seam in Pan San coal mine , the major factors influencing gas drainage through downward cross-layer drilling were discussed .A package solution contains plugging water in area and a hole sealing method was put forward , and a new hole sealing method for gas extraction by downward cross-layer drilling was formed .According to the field practice , this new method worked well, both the average quantity and the average concentration of extracted gas increased dramatically .

关 键 词：瓦斯抽采 下向钻孔 区域封水 封孔方法 

分 类 号：X936[环境科学与工程—安全科学]