提高围岩破碎区穿层钻孔抽采效果新技术与应用
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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.
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.
引文
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[8]曾柳絮.松软地层高压灌浆封孔浆体研制及效果论证[D].长沙:长沙理工大学,2012.
[2]张瑞瑞.突出煤层穿层钻孔抽采瓦斯应用技术研究[J].煤炭与化工,2015,38(4):137-139.
[3]张龙.围岩破碎区域穿层钻孔施工工艺[J].内蒙古煤炭经济,2017(14):133.
[4]王新琨,张荣.芦岭煤矿穿层钻孔二次封孔技术及工艺研究[J].煤炭技术,2015,34(5):170-172.
[5]王冰松,余超,张振.提高穿层钻孔抽采效果技术研究与应用[J].山东煤炭科技,2015(6):93-96.
[6]陈存强.“两堵一注”带压封孔技术在白龙山煤矿一井的应用研究[J].中国煤层气,2015,12(4):28-32.
[7]周成刚,王佰顺.松软破碎岩层“两堵一注”式带压注浆封孔工艺研究与应用[J].煤炭技术,2016,35(2):206-208.
[8]曾柳絮.松软地层高压灌浆封孔浆体研制及效果论证[D].长沙:长沙理工大学,2012.