某基坑工程局部失效分析及处理方案  

Local Failure Analysis and Mitigation of a Deep Excavation

作　　者：王海成 王卫 张龙 WANG Haicheng;WANG Wei;ZHANG Long(China Machinery TIDI Geotechnical Engineering Co.Ltd.,Wuhan 430074)

机构地区：[1]中机三勘岩土工程有限公司,武汉430074

出　　处：《土工基础》2022年第1期9-11,20,共4页Soil Engineering and Foundation

摘　　要：随着武汉城市建设及地下空间的开发利用,基坑工程的规模、深度及支护方式向着更大、更深、更复杂的方向迈进。但在其发展过程中也会出现一些问题,如地面沉降、基坑垮塌、涌水冒砂等,这给建设者们提出了新的挑战。以武汉市某软土基坑为例,尽管支护方案前期已通过相关审查,但在后续施工过程中仍出现局部失稳的现象。现从坡顶超载及暴雨影响等角度出发,综合分析了其原因并提出了解决方案,对类似工程具有一定的借鉴意义。With the development and utilization of urban construction and underground space in Wuhan, deep excavation engineering has received wider and wider applications. The size, excavation depth and supporting methods of deep excavation are moving towards a larger, deeper and more complex direction. However, in the process of its development, some hazards, such as land subsidence, deep excavation collapse, water and quick sand gushing, are still occasionally encountered during the construction. These hazards pose new challenges to the builders and developers. This paper presents a deep excavation supporting in soft soil case history in Wuhan. Although the excavation supporting system passed the peer review in the design stage, there was still local instability in the construction. This paper comprehensively analyzes the reasons and proposes solutions for the overload on the top of the slope and the impact of excessive rainstorm.

关 键 词：基坑工程 软土地区 基坑失稳 解决方案 

分 类 号：TU473[建筑科学—结构工程]