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Journal of Shanghai Jiaotong University(Science) >

2015 , Vol. 20 >Issue 6: 690 - 695

DOI: https://doi.org/10.1007/s12204-015-1678-8

Research article

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

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  • 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 date: 2014-04-28

  Online published: 2020-10-09

Supported by

The National Natural Science Foundation of China (Nos.41330633 and 41372286);The Foundation of State Key Laboratory of Ocean Engineering (No.GKZD010059)

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Abstract

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： laterally loaded piles; $m$-method; hydraulic head; land deformation; pumping-recovery; circular excavation; back analysis; horizontal displacement; outage performance; heterogeneous circumstance; magnetic resonance imaging (MRI); sparse representation; non-convex; generalized thresholding; amplify-and-forward (AF); beamforming; channel state information (CSI); power control; cognitive radio; monotone optimization; price; Stackelberg game; fairness; supply chain coordination; dictionary updating; alternating direction method; two-level Bregman method with dictionary updating (TBMDU); admission control scheme; heterogeneity; substitution; service parts; last stock; handover service; high-speed train communication; S-clay1 model; undrained compression test; functionally graded materials; cylindrical sandwich panel; low-velocity water entry; cylinder structure; rectangular sandwich plate; simply supported; free vibration; resting-state brain function network; supercavitating; ventilated; dynamic mesh; pitching; wall effect; model network; connection distance minimization; topological property; anatomical distance; common neighbor; underwater glider; nonlinear control; adaptive backstepping; Lyapunov function; cylinder radius; initial velocity; entry angle; soft soil; strain-dependent modulus; video capsule endoscopy (VCE); frame rate; working hours; in vivo experiment

Cite this article

Kai-yong HUANG, Xiang-lian ZHOU, Jian-hua WANG . Numerical Simulation of Drawdown and Land Deformation in Pumping-Recovery Tests Performed on a Circular Excavation[J]. Journal of Shanghai Jiaotong University(Science), 2015 , 20(6) : 690 -695 . DOI: 10.1007/s12204-015-1678-8

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