论文部分内容阅读
新奥法施工的核心思想是把隧道围岩和支护结构作为一个完整的支护体系,而监控量测是新奥法施工的重要组成部分。以渝宜高速公路骡坪隧道为工程背景,基于隧道埋深大、大变形等工程特点,通过围岩变形监测、支护体系受力监测和锚杆轴力等现场监测,分析了隧道大变形段典型围岩的变形特点,得到了隧道在软弱岩体施工开挖过程中的围岩变形规律及支护体系受力特点,从而判断围岩的变形状态及支护的可靠程度。研究成果为隧道的现场施工提供了必要的依据,同时也可为分析研究其它同类工程提供参考。
The core idea of the construction of the new Austrian law is to tunnel surrounding rock and support structure as a complete support system, and monitoring and measurement is an important part of the construction of the new Austrian law. Based on the engineering characteristics of muleing tunnel of Yu-Yi Expressway, based on the engineering characteristics of large buried depth and large deformation of tunnel, by on-site monitoring of surrounding rock deformation, mechanical monitoring of support system and axial force of bolt, The deformation characteristics of the typical surrounding rock of the section, the deformation law of the surrounding rock and the bearing force characteristics of the supporting system during the excavation of the weak rock mass are obtained, and the deformation state of the surrounding rock and the reliability of the support are judged. The research results provide the necessary basis for on-site construction of the tunnel, and also provide reference for other similar projects.