摘要
以上海前滩33-01地块项目深基坑工程为背景,介绍了软土地区深厚承压水含水层的水文地质条件下,在上海地区首次采用50m深CSM工法等厚度水泥土搅拌墙作为落底式止水帷幕,隔断承压水含水层,保护基坑及周边环境的安全。通过CSM工法钻芯取样结果以及基坑监测数据的分析表明,基坑工程采取CSM工法等厚度水泥土搅拌墙,隔水效果良好,有效的控制了基坑降承压水对周边保护对象的影响,可以为类似工程提供一定的参考。
Based on the deep excavation project of Shanghai Qiantan Block 33-01,the choice and analytic thoughts of deep excavation support systems are put forward for the hydrogeological conditions of deep confined aquifer in soft soil areas.The technical countermeasures corresponding to the control of confined groundwater of the deep excavation are introduced.In order to reduce the the adverse effects of pit construction on the surrounding environment,the confined water layer is blocked by the CSM method constant-thickness cement-soil wall.The monitoring data indicate that the surrounding environment is effectively protected by the proposed support design and implementation.Furthermore,these solutions may provide valuable reference for other similar projects in soft soils.
作者
李成巍
梁志荣
魏祥
王国粹
LI Cheng-wei;LIANG Zhi-rong;WEI Xiang;WANG Guo-cui(Shanghai Shenyuan Geotechnical Engineering Co.,Ltd.,Shanghai 200040,China)
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2019年第A02期125-128,共4页
Chinese Journal of Geotechnical Engineering
基金
华东建筑集团科研项目(16-1类-0489-地)
关键词
CSM工法
等厚度水泥土搅拌墙
承压水控制
深基坑
止水帷幕
CSM method
constant-thickness cement-soil wall
control of confined groundwater
deep excavation
curtain for cutting off water
