提高围岩破碎区穿层钻孔抽采效果新技术与应用  

New Technology and Application of Improving Extraction Effect of Crossing Hole in Surrounding Rock Broken Zone

作　　者：王鹏 WANG Peng(Yuwu Mining Company,Changzhi 046100,China)

机构地区：[1]余吾煤业有限责任公司,山西长治046100

出　　处：《煤炭技术》2019年第2期85-88,共4页Coal Technology

摘　　要：针对底抽巷围岩破碎区封孔差,抽采效率低的难题。试验了"全岩段两堵一注"带压封孔和"带压循环灌浆"充填裂隙新技术,既解决了新成钻孔封孔浓度低且衰减快的问题,又解决了已成钻孔浓度低抽采效果差的问题,其效果对围岩破碎区穿层钻孔瓦斯快速预抽具有重要的工程意义。To solve the problem of poor sealing and low extraction efficiency in the fractured surrounding rock area. Studies the "whole rock section two plugging a pressurized sealing" and "pressure cycle grouting" filling fracture technology, not only solve the new hole sealing low concentration and fast attenuation problem, and solves the problem of low concentration drilling has become the problem of poor drainage effect, the effect of broken zone wear gas drilling drainage layer has important engineering significance.

关 键 词：穿层钻孔 两堵一注 循环灌浆 充填裂隙 

分 类 号：TD712[矿业工程—矿井通风与安全]