秀山隧道全断面帷幕注浆固砂止水技术研究

摘要

In light of characteristics of Xiushan tunnel with complicated hydrological conditions and high surrounding water sources demands, curtain grouting water-shutoff technique is applied which is good for protecting ecological environment of the tunnel top and reducing future trou- ble. As a result, the construction difficulties including high-pressure water gushing in the tunnel and sudden sand are successfully solved.%针对秀山隧道水文地质条件较复杂，周围水资源环境要求高的特点，通过采用有利于保护洞顶生态环境、减少后患的帷幕注浆堵水技术，成功地解决了洞内高压涌水、突砂等施工难题。