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Article

Influence of Filter Tube of Pumping Well on Groundwater Drawdown during Deep Foundation Pit Dewatering

by 1,2, 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: Aldo Fiori
Water 2021, 13(22), 3297; https://doi.org/10.3390/w13223297
Received: 2 November 2021 / Revised: 17 November 2021 / Accepted: 18 November 2021 / Published: 21 November 2021
(This article belongs to the Section Soil and Water)
The partial penetrating waterproof curtain combined with pumping wells is widely applied to deep foundation pit dewatering engineering. The filter tube of the pumping well plays a critical role on the environment effect that resulted from foundation pit dewatering. This paper investigated the impact of the filter tube on the groundwater drawdown outside the pit to provide a theoretical basis for the foundation pit dewatering design. Three patterns according to the relative position of the waterproof curtain and the filter tube, which are called wall-well patterns, namely the full-closed pattern, part-closed pattern, and none-closed pattern, have been analyzed. By taking a practice engineering case in Shanghai as an example, the relationship among the proportion of the filter tube length to the dewatering aquifer thickness, the buried depth difference of the wall-well, and the groundwater drawdown difference at both sides of the waterproof curtain are discussed by numerical simulation. The full-closed pattern is the optimal wall-well pattern on the ideal condition. The suggested and optimal values of the filter tube length to the dewatering aquifer thickness are 38.7% and 58.2%. The suggested and optimal values of the buried depth difference of the wall-well are −6.41 m and −1.92 m. View Full-Text
Keywords: filter tube; pumping well; groundwater drawdown; waterproof curtain; deep foundation pit dewatering filter tube; pumping well; groundwater drawdown; waterproof curtain; deep foundation pit dewatering
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MDPI and ACS Style

Zhang, X.; Wang, X.; Xu, Y. Influence of Filter Tube of Pumping Well on Groundwater Drawdown during Deep Foundation Pit Dewatering. Water 2021, 13, 3297. https://doi.org/10.3390/w13223297

AMA Style

Zhang X, Wang X, Xu Y. Influence of Filter Tube of Pumping Well on Groundwater Drawdown during Deep Foundation Pit Dewatering. Water. 2021; 13(22):3297. https://doi.org/10.3390/w13223297

Chicago/Turabian Style

Zhang, Xuehan, Xuwei Wang, and Yeshuang Xu. 2021. "Influence of Filter Tube of Pumping Well on Groundwater Drawdown during Deep Foundation Pit Dewatering" Water 13, no. 22: 3297. https://doi.org/10.3390/w13223297

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