Journal of Shanghai Jiao Tong University(Science) ›› 2015, Vol. 20 ›› Issue (6): 690-695.doi: 10.1007/s12204-015-1678-8

• Research article • Previous Articles     Next Articles

Numerical Simulation of Drawdown and Land Deformation in Pumping-Recovery Tests Performed on a Circular Excavation

Kai-yong HUANG1,2,3, Xiang-lian ZHOU1,2, Jian-hua WANG1,2,*   

  1. 1 Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China
    2 State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China
    3 Shanghai Shen Yuan Geotechnical Engineering Co., Ltd., Shanghai 200040, China
  • Received:2014-04-28 Online:2015-12-20 Published:2020-10-09
  • Contact: Jian-hua WANG
  • Supported by:
    The National Natural Science Foundation of China (Nos.41330633 and 41372286);The Foundation of State Key Laboratory of Ocean Engineering (No.GKZD010059)


A mathematical model, which not only fully couples fluid flow and solid skeleton deformation in unsaturated porous elastic media but also considers deformable diaphragm walls, is formulated in axially symmetric cylindrical coordinates for drawdown and land deformation. Based on this model, pumping-recovery tests in various conditions are numerically simulated to reveal the effects of elastic modulus of soil $E$ and initial saturated hydraulic conductivity $K_{\rm sat0} $ on hydraulic head and land deformation. The heterogeneity with respect to $E$ and $K_{\rm sat0} $ is separately taken into account. Large elastic modulus of soil contributes to both dewatering process and deformation control. Either large or small initial saturated hydraulic conductivity may cause relatively high groundwater table, while the larger one leads to smaller displacements.

Key words: hydraulic head|land deformation|pumping-recovery|circular excavation|heterogeneity

CLC Number: