套管带压固结封孔技术在瓦斯压力测定中的应用

Application of Pressurized Cementation Sealing Technology with Casing to Gas Pressure Measurement

针对在顶底板承压水大、裂隙发育的煤层中各种测压封孔技术所存在的问题,提出了利用套管带压固结封孔技术进行注浆封堵顶底板裂隙,阻止承压水和裂隙水进入测压室,同时减小测压室体积,缩短瓦斯压力平衡时间,实现快速准确测定煤层瓦斯压力。应用该技术对鑫珠春煤矿一5煤层进行了瓦斯压力测试试验并取得成功。

According to the existing problems of the different pressure measurement and borehole sealing technology for the seam with high pressurized water in the roof and floor and the well developed fissures,a pressurized cementation technology with the casing was provided to apply to the roof and floor fissure grouting and sealing.The pressurized cementation technology with the casing could prevent the pressurized water and the fissure water rushed in to the pressure measurement chamber,could reduce the volume of ...