Land subsidence simulation in the Su-Xi-Chang area and Shanghai City
The Su-Xi-Chang area and Shanghai City are treated as a single study area for the land subsidence simulation in this paper. Considering the complexity of deformation features of hydrogeological units on a regional scale, a three-dimensional groundwater model with varying parameters and a one-dimensional (vertical)subsidence model are built. According to the different deformation features (elastic, elastic-plastic and viscoelastic-plastic), the groundwater flow equation and the subsidence equation based on the corresponding strainstress relationship are adopted. Solution is by an iterative method based on multiscale finite element method. The simulation results match well with the observed data after calibration and verification. As a result, the coupled model could be used as a predictive tool and to give some reasonable advice of groundwater exploitation and the related land subsidence in future pumping scenarios.
X.Q.Shi Y.Q.Xue J.C.Wu S.J.Ye Q.F.Li J.Yu
Department of HydroSciences, Nanjing University, Nanjing, P.R.China Institute of Geology Survey of Shanghai, Shanghai, P.R.China Geological Survey of Jiangsu Province, Nanjing, P.R.China
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
1403-1406
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）