浅谈注浆堵水及冻结施工技术在丰龙矿井的应用

摘要

Drilling construction of north flank air shaft in Fenglong Colliery is very difficult due to occurring fractured zones in karst cave.The paper introduces grouting and blocking water using fly ash and rice husk and freezing technology construction,which ob%丰龙矿井北翼风井井筒在施工钻孔时遇溶洞裂隙发育区,钻孔施工十分困难,采用粉煤灰及稻壳注浆堵水、冻结技术施工,取得了成功经验,在同类复杂水文地质条件的立井井筒施工中具有借鉴意义。