深埋长距离隧洞施工涌水处理技术

Control methods of water inrush in construction of deep buried and long-distance tunnel

基于隧洞施工地质条件复杂、地下水资源丰富等特点,主要阐述了深埋长距离隧洞施工过程中处理突发涌水的施工方法。提出了将超前帷幕注浆、开挖后注浆、局部注浆及补注浆等施工技术方法相结合的一套涌水处理施工技术。灌浆结果表明:该方法切实可行、经济实用,可有效封堵渗水部位,降低安全风险,保证了工程安全顺利施工。

Characteristics of tunnel construction include complex geological conditions and abundant underground water resources.This paper describes the control methods of water inrush during the construction of a deep burial and long-distance tunnel.By combining the advance curtain grouting,post-excavation grouting,local and supplementary grouting,a set of construction technology for controlling water inrush is put forward.The practical construction has proved that the proposed method is feasible and economical,and it can effectively seal off water inrush area,reduce the safety hazards,and ensure the construction continues safely.