通省隧道变形产生原因及控制措施研究

Research on Deformation Causes and Control Measures in Tongsheng Tunnel

十房高速公路通省隧道围岩主要为武当群云母片岩,属于典型的软弱围岩。在施工过程中,隧道围岩岩性与结构多变,发生多次严重的大变形甚至坍塌,给施工带来了很大的困难,施工过程中作业安全隐患较大。本文分析了隧道强风化云母片岩沉降变形的特点和原因,围绕隧道的沉降变形,总结了一些施工中变形控制措施,实现围岩的安全顺利施工。

Surrounding rock of Tongsheng tunnel on Shifang highway is mainly made of Wudang group of mica schist and belongs to the typical weak surrounding rock. In the process of construction,the tunnel surrounding rock lithology and structure change a lot,serious large deformation or even collapse occurred many times,which has brought great difficulties to construction and causes safety concerns to the construction process. This paper analyzes the strong weathering of mica schist rock tunnel subsidence deformation characteristics and reasons of around the settlement deformation of the tunnel,summarizes some measures of deformation control during construction,realize the smooth construction similar to the safety of the surrounding rock.