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Open AccessArticle

Impact of the Depth of Diaphragm Wall on the Groundwater Drawdown during Foundation Dewatering Considering Anisotropic Permeability of Aquifer

by 1,2 and 1,2,*
1
State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Minhang District, Shanghai 200240, China
2
Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure, Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
*
Author to whom correspondence should be addressed.
Academic Editor: Maurizio Barbieri
Water 2021, 13(4), 418; https://doi.org/10.3390/w13040418
Received: 26 December 2020 / Revised: 27 January 2021 / Accepted: 2 February 2021 / Published: 5 February 2021
(This article belongs to the Section Hydrology and Hydrogeology)
Foundation dewatering combined with a waterproof curtain is widely applied to ensure the safety of the foundation pit in areas with multi-aquifer–aquitard alternative strata. The buried depth of the diaphragm wall can influence the environmental effect due to dewatering obviously. This paper investigates the impact of the buried depth of the diaphragm wall on the groundwater drawdown considering the anisotropic permeability of the dewatering aquifer. Numerical simulation is conducted based on an engineering case. The ratio of penetrating depth of diaphragm wall to thickness of dewatering aquifer (RW) and the ratio of horizontal and vertical hydraulic conductivity of dewatering aquifer (RC) are varied. The relationship between approximate hydraulic gradient (Δi) and RW (or RC) can be fitted by Boltzmann curve (or logarithmic curve). Effective, suggested and control values of RW (or RC) are proposed, of which the suggested value is recommended in practical engineering. The effective, suggested and control value of RW can be calculated by logarithmical equation considering the value of RC. View Full-Text
Keywords: diaphragm wall; anisotropic permeability; foundation dewatering; groundwater drawdown; penetrating depth diaphragm wall; anisotropic permeability; foundation dewatering; groundwater drawdown; penetrating depth
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MDPI and ACS Style

Wang, X.-w.; Xu, Y.-s. Impact of the Depth of Diaphragm Wall on the Groundwater Drawdown during Foundation Dewatering Considering Anisotropic Permeability of Aquifer. Water 2021, 13, 418. https://doi.org/10.3390/w13040418

AMA Style

Wang X-w, Xu Y-s. Impact of the Depth of Diaphragm Wall on the Groundwater Drawdown during Foundation Dewatering Considering Anisotropic Permeability of Aquifer. Water. 2021; 13(4):418. https://doi.org/10.3390/w13040418

Chicago/Turabian Style

Wang, Xu-wei; Xu, Ye-shuang. 2021. "Impact of the Depth of Diaphragm Wall on the Groundwater Drawdown during Foundation Dewatering Considering Anisotropic Permeability of Aquifer" Water 13, no. 4: 418. https://doi.org/10.3390/w13040418

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