摘要
基于多孔介质有效应力原理的渗流-变形耦合,考虑孔隙度、渗透率非线性变化,建立三维地面沉降变形完全耦合数学模型,并给出了模型的有限差分解法.该模型可以刻画地下水开采、建筑物荷载、基坑降水等作用下的三维地下水渗流场和地层变形位移场,分析地面沉降的三维变化与非线性特征,为地面沉降研究与防治提供技术手段.
For seepage-deformation coupling in porous media based on the effective stress principle,a fully coupled 3D mathematical model for land subsidence was established with consideration of the nonlinear changes of soil porosity and permeability,and the finite difference method was used to solve the model.The model can be used to characterize the 3D groundwater seepage field and the stratum deformation displacement field with the effects of groundwater exploitation,construction loads,and dewatering of foundation pits,and to analyze the 3D changes and nonlinear characteristics of land subsidence.The model also provides technical approaches for research of land subsidence and its prevention and treatment.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第6期665-670,共6页
Journal of Hohai University(Natural Sciences)
基金
上海高校选拔培养优秀青年教师科研专项基金(GJD09029)
上海工程技术大学科技发展基金(校启09-27)
关键词
地面沉降
有效应力原理
流固耦合
三维位移场
非线性变化模型
有限差分法
land subsidence
effective stress principle
fluidsolid coupling
3D displacement field
nonlinear change model
finite difference method
