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软土地区的基坑施工常常因基坑周围过度堆载、地下水位波动、支护强度不够等问题发生工程事故。结合某软土基坑支护失稳案例,从地质条件、支护方案和基坑周边超载等方面查找原因,按照先控制后治理的事故处理思路,简要介绍事故处理方案和处治对策,包括加强支护结构、调整基坑土方施工方案等措施,并对此类软土基坑的施工管理经验进行了总结,为该地区的软土基坑设计和施工提供参考。
Construction of soft soil area often due to excessive pits around the foundation pits, groundwater level fluctuations, support strength is not enough and other issues of engineering accidents. Combined with a case of instability in a soft soil foundation pit support, find out the reasons from the geological conditions, support programs and surrounding overloading of foundation pit and so on, according to the thought of accident treatment after the first control and post-treatment, briefly introduce the accident treatment plan and treatment measures, including strengthening Support structure and adjustment of foundation pit earthwork construction plan. The construction management experience of this kind of soft soil foundation pit is summarized, which can provide references for the design and construction of soft soil foundation pit in this area.