煤矿井下水文钻孔水瓦斯混合喷涌综合治理

Comprehensive Control on Water and Gas Mixing Spewing in Hydrologic Drilling of Underground Coal Mine

摘要:

在煤矿井下水文地质钻探施工过程中遇到水与瓦斯混合喷涌并严重威胁施工安全难题。先采用注浆法封堵失败。针对这样的难题，设计应用了3套装置——钻具防喷器、孔口柔性密封防喷器，水淹闭式水气分离器进行综合治理。效果明显。

Abstract:

Water and gas mixing spewing was encountered in the construction process of coal mine hydrogeology drilling, which is a serious threat to the construction safety. The grouting plugging was tried with failure. 3 sets of device of drilling tool blowout preventer, orifice flexible sealing blowout preventer and flooding closed water-gas separator for integrated control were designed and applied with obvious effects.