摘要
针对天津滨海地区复杂软土沉积层厚度大、地下水位高、水量丰富、水动态变化幅度大、基坑降水易出现安全事故等特点,通过总结分析天津高银117大厦工程超大深基坑降水设计及施工经验,探讨了滨海地区双层承压水超大深基坑降水关键技术,最后介绍了两种基坑降水创新技术:基于"连通器"效应的混合井降水技术和基坑降水自动维持控制系统。
Safety accidents always occur in the construction of foundation excavation dewatering, because the soft soil deposit has the characteristics of great thickness, rich groundwater, high and great variation of groundwater level. This paper summarized and analyzed the experience of dewatering design and construction of ultra-large and deep foundation excavation in Tianjin Goldin Finance 117 project. The key technology of ultra-large and deep foundation excavation dewatering with two layers of confined water is discussed. Two new dewatering technologies were introduced such as mixed wells technology based on communicating vessel and automatic control system for foundation excavation dewatering.
出处
《施工技术》
CAS
北大核心
2014年第13期1-5,共5页
Construction Technology
基金
中建三局研发课题项目(CSCEC3B-2012-14)
关键词
地下工程
高层建筑
深基坑
降水
试验
监测
underground
tall buildings
deep foundation excavation
dewatering
tests
monitoring
