【摘要】 张家界市某深基坑工程面临复杂的周边环境和地质条件，基坑周边建筑物密集，且距离较近。基坑支护施工完后，因地下室停车位规划问题，新增第4层地下室，形成“坑中坑”,主要地层为高地下水位漂石地层，桩基施工成孔困难、旋喷的止水帷幕不易形成；故选择适宜支护结构、采用合适的旋喷止水帷幕施工技术尤为重要。通过严格的监控量测和信息化施工等关键技术措施，保障基坑及邻近建(构)筑物在施工及后续使用过程中的安全稳定。更多还原

【Abstract】 A deep foundation excavation project in Zhangjiajie City, Hunan Province, is faced with a complex surrounding environment and geological conditions. The buildings around the foundation excavation are dense and close. After the foundation excavation support construction is completed, due to the problem of basement parking space planning, the fourth layer of basement is added to form a “pit in the pit.” The main stratum is the high groundwater level boulder stratum. In the pile foundation construction, it is difficult to form holes and the jet grouting waterproof curtain. Therefore, it is particularly important to select the appropriate supporting structure and adopt the appropriate jet grouting waterproof curtain construction technology. The safety and stability of the foundation excavation and adjacent buildings(structures) during construction and subsequent use are guaranteed through strict monitoring and measurement, information construction, and other key technical measures.更多还原