皮家山隧道基于水环境保护的帷幕注浆施工

Curtain Grouting Construction and Water Resource Protection at Pijiashan Tunnel

皮家山隧道进口通过长达262 m的高压富水断层带,在施工中采取帷幕注浆固结堵水的施工措施,成功的通过了大断层,并保护了水环境,对以往隧道施工中地下水“以排为主”的施工原则是一种理念上的革新,对相似隧道施工具有一定的借鉴价值。

The entrance of Pijiashan Tunnel passes a fault of as long as 262m with abundant pressure water. Curtain grouting was adopted as water-stopping measure in the construction to make the tunnel pass the fault successfully and the water resources were protected, which is an innovation against the traditional methods mainly based on the ＂drainage＂ principle in dealing with ground water during construction, and is of reference value to similar tunnel construction.