复杂地质条件下登楼山隧道施工技术研究

Study on Construction Technology of Dengloushan Tunnel under Complex Geological Conditions

摘要: 登楼山隧道是弥勒–玉溪高速公路中最重要的控制性工程，本文将对登楼山隧道的断面布置形式与工法选择进行研究。通过对登楼山隧道的工程概况以及国内特长隧道断面形式的调研情况进行分析，推荐本隧道拟采用设置平行导洞的三洞方案进行设计。针对钻爆法和TBM工法各自的优缺点，从地层适应性、施工安全性、技术可行性、经济性、施工工期等5个方面进行对比分析，推荐平行导洞工法选择使用钻爆法施工。分析过程为类似工程案例提供参考依据。

Abstract: The Dengloushan tunnel is the most important control project in the Mile-Yuxi expressway. The section layout form and construction method selection of Dengloushan tunnel are studied. Through the analysis of the engineering situation of the Dengloushan tunnel and the investigation of the section shape of the domestic special long tunnel, it is recommended that the tunnel is designed with a three-hole scheme with parallel pilot tunnel. The advantages and disadvantages of drilling-blasting method and TBM method are compared with the geological conditions of the tunnel. The construction method of the parallel pilot tunnel is recommended to use the drill-ing-blasting method in the project.