大垭合隧道涌水破碎带灾害防治及稳定性研究

The research on disaster prevention and stability of zone of water gushing and fracture for Dayahe tunnel

对大垭合隧道涌水破碎带进行了注浆堵水处理,通过监控量测对地质条件复杂的典型断面实时监控,实测数据表明围岩内空变形和衬砌受力都较小,使隧道在开挖过程中的安全稳定得到保障。

According to the zone of water gushing and fracture in Dayahe tunnel, we take such measures as grouting and blocking water. The real-time monitor of typical section under the complex geological condition is carried out by monitoring and measurement. The test data shows that both mechanical characteristic of lining and deformation are small, so the ,security and stability of tunnel is out of question in the process of excavation.