定向长钻孔条带预抽技术在松软突出煤层应用  

Application of Strip Pre-drainage Technology with Directional Long Borehole in Soft and Outburst Coal Seam

作　　者：李臣武 Li Chenwu(School of Architecture and Engineering,Guizhou Vocational and Technical College,Guizhou,Guiyang 550023)

机构地区：[1]贵州职业技术学院建筑工程学院,贵州贵阳550023

出　　处：《江西煤炭科技》2021年第4期162-165,共4页Jiangxi Coal Science & Technology

摘　　要：为有效解决突出矿井原始应力区松软煤层煤巷条带区域预抽问题,以金佳煤矿佳一采区22#煤层132204运输巷为研究对象,采用定向长钻孔条带预抽瓦斯技术进行消突试验,钻孔设计时将主孔平孔部分布置在岩性坚硬的煤层底板岩层中,软煤钻孔施工时采用匀速运转、缓慢钻进等措施,提高钻孔的成孔率,钻孔采用高负压抽采,经抽采后进行措施效果检验,实现抽采达标,取得良好的抽采效果。In order to effectively solve the problem of pre-drainage in the strip area of soft coal seam in the original stress area of outburst mine,taking 22#coal seam,132204 transport roadway,Jiayi mining area of Jinjia Colliery as the research object,the outburst elimination test is carried out by directional long drilling strip pre-drainage technology.The flat hole part of the main hole is arranged in the rock hard coal seam floor rock layer during drilling design,and the drilling rate is improved by uniform speed operation and slow drilling during soft coal drilling construction,which achieves drainage up to the standard and obtains good drainage results.

关 键 词：松软突出煤层 定向长钻孔 条带预抽 达标评判 

分 类 号：TD712.62[矿业工程—矿井通风与安全]