大径孔预抽煤巷条带瓦斯技术的优化及应用  

The optimization and application of large diameter borehole for pre-drainage of stripe gas in roadway

作　　者：刘明举[1] 盛锴[1] 郝富昌[1] 庞学文 刘欣[1] 

机构地区：[1]河南理工大学瓦斯地质与瓦斯治理重点实验室,河南焦作454000 [2]义马煤业(集团)有限责任公司孟津煤矿,河南洛阳471142

出　　处：《煤田地质与勘探》2014年第6期110-113,共4页Coal Geology & Exploration

摘　　要：针对孟津煤矿二2煤层弱突出危险性的特点,以及11031工作面胶带、轨道顺槽掘进速度缓慢的问题,研究不同孔径钻孔的卸压范围和抽放效果。采用大直径钻孔,钻孔分区式布置对现有区域消突技术进行优化,孔径113 mm的抽放钻孔单孔抽放瓦斯纯量为孔径94 mm的1.8倍。表明大径顺层长钻孔的应用,能够有效消除煤巷预抽条带瓦斯突出危险,提高掘进速度,确保掘进工作面的安全生产。Aiming at the weak risk of outburst in seam Ⅱ2 in Mengjin Mine and the problem of slow advance ratein working face11031, the ranges of pressure relief and drainage effects of drill holes with different bore diameterswere studied. Large diameter drilling was applied. The optimization of existing regional outburst eliminationtechnology was carried out by the partition layout of drill holes. The outburst elimination effects were investigatedin the area where measures were taken, it was found that a single hole drainage with 113 mm bore diameter was 1.8times higher than that that of 94mm. The results indicated that the application of large diameter borehole in seamcould eliminate gas outburst risk with pre-drainage of stripe gas effectively, enhance excavation speed and ensurethe safe production in working face.

关 键 词：预抽煤层瓦斯 煤与瓦斯突出 大直径 分区式布孔 顺层长钻孔 

分 类 号：TD713.3[矿业工程—矿井通风与安全]