重庆轨道交通九号线二期工程深基坑支护和土方开挖施工技术

Construction Technology for Deep Foundation Pit Support and Earth Excavation of Chongqing Metro Line 9 Phase II Project

以重庆轨道交通九号线二期工程为背景,着重围绕深基坑开挖和支护施工技术进行研究,主要包含总体施工思路、开挖方法、支护方法及相关技术要点,最终取得了良好的施工效果。经过实践得出结论:基坑的施工质量会对轨道交通的整体建设效果造成直接影响。施工人员应根据现场情况制订整体施工方案,以科学的方法开挖,从而保证工程的整体质量。

The paper is based on the second phase project of Chongqing Metro Line 9,and focuses on the research of deep foundation pit excavation and support construction technology.It mainly includes the overall idea,excavation methods,support methods,and related technical points,and ultimately achieves good construction results.Through practice,it has been concluded that the construction quality of foundation pits will have a direct impact on the overall construction effect ofrail transit.Construction personnel should develop an overall construction plan based on the on-site situation and use scientific methods to excavate to ensure the overall quality ofthe project.