留窄煤柱沿空掘巷在突出煤层中的应用研究  

Application Research of Gob-side Roadway Driving with Narrow Coal Pillar in Outburst Coal Seam

作　　者：陈才贤[1] 苏静[1] 汤铸[1] 李文斌[2] 

机构地区：[1]六盘水师范学院,贵州六盘水553004 [2]贵州水城矿业(集团)有限责任公司,贵州六盘水553004

出　　处：《矿业安全与环保》2015年第5期81-83,91,共4页Mining Safety & Environmental Protection

基　　金：贵州省科学技术基金项目(黔科合J字LKLS[2013]03号);贵州省科学技术基金项目(黔科合LH字[2014]7465号);贵州省教育厅自然科学研究项目(黔教合KY字[2014]283号)

摘　　要：为了降低煤巷掘进过程中的突出危险性,提高巷道掘进效率,在水城矿区C11突出煤层中实施了41113回风平巷留5 m煤柱沿空掘巷技术,同时采用锚网喷支护,最高掘进进度达145 m/月,瓦斯涌出量为1.58 m3/min,瓦斯浓度为0.54%,钻孔效验指标K1值为0.384 1 m L/(g·min1/2),Smax值为2.5 kg/m。该技术的应用表明:留窄煤柱沿空掘巷仅需采用安全防护措施掘进,减少了防突工程量,提高了巷道的掘进速度,增加了煤炭资源回采率,确保了突出煤层的安全高效生产。In order to reduce the outburst danger in the coal roadway driving and improve the drivage efficiency of the roadway, gob-side roadway driving technology by presetting 5 m-wide coal pillar was practiced in No. 41113 return airway in C11 outburst seam of Shuicheng Coal Mining Area, and meanwhile the support pattern by using shotcrete and bolting wire mesh was adopted, the maximum driving rate of the return airway was 145 m/month, the gas emission quantity was 1. 58 m3/min, the gas concentration was 0. 54%, the borehole collation index K1 was 0. 384 1 mL/( g · min1/2 ) and Smax was 2. 5 kg/m. The application of this technology showed that the gob-side entry driving by presetting narrow coal pillar only need to take safety protection measures for the driving, so it can reduce the engineering quantity of outburst prevention, speed up the roadway driving, improve the recovery rate of coal resources and ensure the safety and high efficient product of the outburst coal seam.

关 键 词：突出煤层 突出危险性 窄煤柱 沿空掘巷 瓦斯涌出 防突 

分 类 号：TD713[矿业工程—矿井通风与安全]