摘要
为合理预测减压降水引起的地表沉降量及其分布,实测了上海某深基坑工程群井抽水试验引起的观测井水头降深和地表沉降,分析了地表沉降的分布和变化规律,并引出场地的等效综合模量来建立承压含水层水位降深与相应地表点沉降之间的对应关系。将等效综合模量和渗流场的数值模拟相结合,提出了减压降水诱发地表沉降的预测方法。
In order to predict the value and the distribution of the settlement,drawdown of the observation well and ground settlement are measured which are induced by borehole pumping test of a deep foundation excavation in Shanghai.The distribution of the ground settlement during pumping test is analyzed and a synthesize modulus is introduced to establish the relationship between the ground settlement and the drawdown in corresponding site.Combining the synthesize modulus and a numerical simulation for the seepage field a method is established to predict the ground settlement induced by dewatering of confined water.
作者
张帆
刘波
ZHANG Fan;LIU Bo(The First Bureau of Geology and Exploration of Zhejiang Province,Hangzhou,Zhejiang 310012,China;Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China;Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,Shanghai 200092,China)
出处
《施工技术》
CAS
2019年第7期47-50,56,共5页
Construction Technology
关键词
基坑工程
减压降水
地表沉降
试验
预测
foundation excavation
dewatering
settlement
tests
prediction
