软土地区深基坑帷幕缺陷处理方法探讨  

Discussion on Treatment Method of Curtain Defect in Deep Excavation in Soft Soil Area

作　　者：丁向东[1] 张海发[2] 冯京京 DING Xiangdong;ZHANG Haifa;FENG Jingjing(Jiangsu Jianyuan Geotechnical Engineering Survey Co.,Ltd.,Nanjing Jiangsu 210019,China;Pearl River Water Resources Integrated Technology Center of Pearl River Water Resources Commission,Ministry of Water Resources,Guangzhou Guangdong 510611,China)

机构地区：[1]江苏省建苑岩土工程勘测有限公司,江苏南京210019 [2]水利部珠江水利委员会珠江水利综合技术中心,广东广州510611

出　　处：《盐城工学院学报（自然科学版）》2020年第4期41-44,58,共5页Journal of Yancheng Institute of Technology:Natural Science Edition

摘　　要：目前,城市中土地开发愈加深入,地下建设越建越深,基坑越来越深、越来越复杂,基坑开挖时,坑内进行抽水或者排水,导致周边地下水位下降,对周围土体中的地下水影响也越来越大。因帷幕失效引起的基坑事故越来越多,帷幕缺陷的补强加固对于发生事故的基坑尤为重要。处理的及时妥当,可有效减少损失,若处理方法不对,会导致事故愈发严重,引起更大的损失。通过南京河西某基坑帷幕漏水的处理措施及效果,总结了软土地区基坑帷幕漏水的处理方式及设计参数,对南京及江苏地区存在软土的基坑帷幕设计、施工及补强均有一定的指导意义。At present,the development of land in cities is getting deeper and deeper,the underground construction is getting deeper and deeper,the foundation pit is getting deeper and more complex.During the excavation of the foundation pit,pumping or discharging water is carried out in the pit,which leads to the decline of the surrounding groundwater level,and the influence on the groundwater in the surrounding soil is more and more serious.More and more foundation pit accidents are caused by the failure of the curtain.Reinforcement of curtain defects are particularly important for foundation pits with accidents.Timely and proper treatment can effectively reduce the loss.If the treatment method is not correct,the accident will become more serious and cause greater losses.Through the treatment measures and effects of curtain leakage of a foundation pit in Hexi,Nanjing,the treatment methods and design parameters of foundation pit curtain leakage in soft soil area are summarized,which has certain guiding significance for the design,construction and reinforcement of foundation pit curtain with soft soil in Nanjing and Jiangsu areas.

关 键 词：软土地区 帷幕缺陷 双液注浆 三轴深搅桩 

分 类 号：TU472[建筑科学—结构工程]