高速公路双连拱隧道施工监控量测及分析

Monitoring and analysis of the construction of a double-arch tunnel on express highway

在宜(宾)水(富)高速公路鞋底坡双连拱隧道工程中,由于对隧道围岩变形及地表沉降进行了现场监测与分析研究,获得了隧道各施工阶段的地表沉降、拱顶下沉和周边收敛数据资料,有效地控制了隧道围岩变形,成功地对隧道洞口段的地质灾害进行了动态预测、预报,避免了重大事故的进一步发展。文章介绍了鞋底坡双连拱隧道的监控量测方案、测量结果分析及研究成果,对类似工程具有一定的指导意义和实际应用价值。

In the process of the construction of Xiedipo double - arch tunnel onYibin - Shuifu express highway, in situ monitoring and analyses were carried out for the deformation of the surrounding rock and the ground settlements. Ground settlements, vault subsidence and the horizontal convergences during each period of construction were obtained to control effectively the surrounding rock deformation. At the same time the geological hazards were predicted and forecasted successfully on the entrance tunnel sections with the occurred accident controlled successfully to develop. The research results provide guidance to similar tunnel engineering projects.