摘要
为保证施工现场条件的干燥性,必须采取措施降低地下水水位,但是降水后会引起土体的固结沉降,对地面早已存在的建筑物构成潜在的威胁.工程降水施工诱发地基沉降是一个三维空间流固耦合问题,借助三维有限差分数值模拟软件FLAC3D建立地层降水过程中渗流场与应力场耦合模型,以金普线地铁隧道8标降水工程为例进行数值模拟,探究土体在饱和状态下改变地层渗透系数达到渗流稳定时的沉降和地下水分布特征.
To ensure the dry conditions of the construction site, several measures were adopted to lower the groundwater level. But it should bring negative effects to the surrounding constructions, such as consolidation subsidence. Taking Jinzhou - Pulandian line 8th section of underground tunnel precipitation engineering as an example, the three-dimensional differential numerical simulation software FLAC^3D was used to establish the coupled model of seepage and stress field dur- ing dewatering process. The objective of this study is to explore soil subsidence and distribution of groundwater with the change of permeability coefficient under the condition of satu- ration.
出处
《大连海事大学学报》
CAS
CSCD
北大核心
2015年第2期123-128,共6页
Journal of Dalian Maritime University
基金
大连市交通科技项目(2011-10)
辽宁省科学事业公益研究基金资助项目(2013003003)
中央高校基本科研业务费优秀科技创新团队培育计划资助项目(3132014326)
关键词
工程降水
渗透系数
固结沉降
FLAC3D
流固耦合
engineering precipitation
permeability coeffi-cient
consolidation subsidence
FLAC^3D
flu-id-solid coupling
