复杂地形地质条件下隧道施工技术研究

RESEARCH ON TUNNEL CONSTRUCTION TECHNOLOGY UNDER COMPLEX TERRAIN AND GEOLOGICAL CONDITIONS

为了研究复杂地形地质条件下隧道的施工技术,以珠海市横琴新区环岛西路(西环隧道及西环隧道以南段)扩建改造工程为工程背景,介绍了依托工程的地形地质复杂情况,探讨了该条件下隧道的施工支护形式、隧道施工工法、隧道近接既有连拱隧道的中岩墙加固方案等,结合该工程实例指出在复杂地形地质条件下开展隧道施工,必须从工程实际着手,合理运用各项施工技术,提高施工效率和质量。

In order to study the tunnel construction technology under complex topographic and geological conditions,this paper introduces the complex topographic and geological conditions of the project based on the engineering background of the expansion and reconstruction project of Huandao West Road(West Ring Tunnel and the southern section of West Ring Tunnel)in Hengqin New Area,Zhuhai City,and discusses the construction support form of the tunnel under this condition,the construction method of the tunnel,the reinforcement scheme of the middle rock wall near the existing double arch tunnel,etc.Combined with the project example,it is pointed out that the tunnel construction under the complex terrain and geological conditions must start from the actual project,reasonably use various construction technologies,and improve the construction efficiency and quality.