基于福建霞浦核电站的淤泥质基坑支护工程.设计出针对性的基坑开挖支护结构.并对基坑开挖前支护结构设计进行稳定性验算和整个支护结构施工过程进行实时监测.研究表明:通过对[水泥搅拌桩重力式挡墙+被动区加固" 支护结构进行岩土软件计算分析和理论公式验算.验证该工程支护结构设计的可行性,同时对坡顶沉降.水平位移监测.深层土体水平位移监测.坑外地下水位监测.邻近建筑沉降.水平位移监测四个方面的监测数据均在规范要求允许范围之内.均未超过设计预警值.可为此类的淤泥质基坑设计类似的支护结构提供参考.

Based on the silt foundation pit supporting project of Xiapu Nuclear Power Station in Fujian. a specific supporting structure for foundation pit excavation was designed. The stability of the supporting structure before excavation was checked and the construction process of the whole supporting structure was monitored in real time. Through the 'cement mixing pile gravity retaining wall + passive reinforcement' supporting structure of geotechnical software analysis and theoretical formula checking. the feasibility of the supporting structure design of the project was verified. According to the monitoring data of slope top settlement and horizontal displacement monitoring. deep soil horizontal displacement monitoring. underground water level monitoring outside the pit. adjacent building settlement and horizontal displacement monitoring. the results were realistic and were within the allowable range of the specification requirements. The research results can provide a reference for the design of similar supporting structures for such muddy foundation pits.