两台阶法在倒虹吸基坑开挖施工中的应用

Application of Two Step Method in Excavation Construction of Inverted Siphon Foundation Pit

通过对往期工程案例的分析,在深基坑明挖施工过程中,开挖方法的选择和运输便道的规划布置直接影响基坑开挖的施工效率、施工成本等。基于设计图纸及现场实际情况,针对珠三角水资源配置工程大岭山倒虹吸开挖施工,研究使用两台阶法进行开挖施工的步骤和相关措施。同时,对开挖过程中可能出现的问题以及解决的措施进行了细致的讨论。

Through the analysis of previous engineering cases,the selection of excavation methods and the planning and layout of transportation roads directly affect the construction efficiency and cost of deep foundation pit excavation during the open excavation construction process.Based on the design drawings and actual onsite conditions,this article studies the steps and related measures of using the two-step method for excavation construction of the Dalingshan inverted siphon in the Pearl River Delta water resource allocation project.At the same time,it has conducted a detailed discussion on the possible problems that may arise during the excavation process and the measures to be taken to solve them.