断层溶蚀带突水涌泥治理施工技术

通过介绍龙潭隧道左洞突水涌泥的基本情况，总结了突水涌泥过程中采取的处理措施，并详细论述了高压劈裂注浆、负压排水、三台阶六步开挖等施工工艺，通过采用这些措施，工程取得了良好的效果。

Treatment construction technology of water and mud burst in the fault dissolution zone

Through the introduction on the basic situation of water and mud burst in the left tunnel of Longtan tunnel,the thesis makes conclusion on the treatment measures in the water and mud burst process,and discusses concretely the construction technologies such as the high-pressure split grouting,drainage by suction and three stairs six step excavation and so forth.The construction has achieved good effects with these measures.