地面钻孔抽放瓦斯技术的试验  

Test of Gas Drawing Technology by Ground Drilling Hole

作　　者：井多胜[1] 徐传田[1] 

机构地区：[1]淮北矿业集团公司海孜煤矿,安徽淮北235000

出　　处：《煤炭技术》2006年第6期84-85,共2页Coal Technology

摘　　要：保护层开采是突出矿井开采煤层群,选择区域性防治突出的有效措施,但在开采保护层时也存在被保护层卸压不充分的问题,因为开采保护层时被保护层所释放的瓦斯经过采动裂隙涌向保护层,但也有部分游离瓦斯不能释放出来,煤层再一次压实后,游离的瓦斯重新变为吸附状态,不能充分对被保护层进行解突。本文介绍在下保护层开采过程中采用地面钻孔进行抽放被保护层瓦斯的技术措施。Protective layer exploitation is an effective measures of coal seam group＇s exploitation and regional prevention gas outburst in mine. But the protected coal layer＇s pressure relief inadequate is a problem during protective layer＇s exploitation. The reason is that part of gas liberated from protected layer swell into protective layer through conjugate fracture, but part of free gas is incapable of loose. After coal seam is compacted once again, these free gas can rebecome absorbed state. So protected layer＇s outburst trend can not be eliminated sufficiently. In this paper technical measures is introduced that the protected layer＇s gas is drew by ground drilling hole, during the under - protective layer＇s exploitation.

关 键 词：保护层 地面钻孔 瓦斯抽放 技术措施 

分 类 号：TD712.62[矿业工程—矿井通风与安全]