海河水利Issue(3)：78-82,5.DOI:10.3969/j.issn.1004-7328.2025.03.017
承压水降水引起地表变形及影响因素分析
Surface Deformation Caused by Confined Water Precipitation and Its Influencing Factors
陈俊 1段爱华 1史尧 2郭慧茜3
作者信息
- 1. 中交第二航务工程局有限公司,湖北 武汉 430000
- 2. 中交第二航务工程局有限公司设计研究院,湖北 武汉 430000
- 3. 河海大学岩土工程科学研究所,江苏 南京 210024||岩土力学与堤坝工程教育部重点实验室(河海大学),江苏 南京 210024
- 折叠
摘要
Abstract
Foundation pit dewatering has an important impact on foundation pit construction,but it has a negative impact on the surrounding environment.Taking the pumping test of confined water in foundation pit engineering as an example,this paper uses finite element analysis software to establish a three-dimensional dewatering model to calculate seepage and its coupling with soil stress and strain,and analyzes the distribution law of surface horizontal displacement and settlement during pumping.The numerical simulation results show that the smaller the elastic modulus of confined water soil layer,the greater the influence on surface deformation,and with the increase of elastic modulus,the degree of influence on surface settlement gradually decreases;Surface deformation is greatly influenced by permeability coefficient,and the effective influence range of surface deformation also increases with the increase of permeability coefficient.Poisson′s ratio has little effect on surface deformation;The surface deformation increases linearly with the increase of single well water output.With the increase of precipitation duration,the surface deformation increases;Water yield of single well and elastic modulus of soil layer not only affect the horizontal displacement and settlement of the surface,but also affect the spatial distribution of the horizontal displacement and settlement of the surface.关键词
土层变形/承压含水层/土层参数/耦合模型Key words
soil layer deformation/confined aquifer/soil layer parameters/coupling model分类
建筑与水利引用本文复制引用
陈俊,段爱华,史尧,郭慧茜..承压水降水引起地表变形及影响因素分析[J].海河水利,2025,(3):78-82,5.
