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

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...

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Autores principales:	Xuehan Zhang, Xuwei Wang, Yeshuang Xu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	filter tube pumping well groundwater drawdown waterproof curtain deep foundation pit dewatering Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/f042dd103c1644d4814cf917ff1c46ab
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spelling	oai:doaj.org-article:f042dd103c1644d4814cf917ff1c46ab2021-11-25T19:16:34ZInfluence of Filter Tube of Pumping Well on Groundwater Drawdown during Deep Foundation Pit Dewatering10.3390/w132232972073-4441https://doaj.org/article/f042dd103c1644d4814cf917ff1c46ab2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/22/3297https://doaj.org/toc/2073-4441The 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.Xuehan ZhangXuwei WangYeshuang XuMDPI AGarticlefilter tubepumping wellgroundwater drawdownwaterproof curtaindeep foundation pit dewateringHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3297, p 3297 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	filter tube pumping well groundwater drawdown waterproof curtain deep foundation pit dewatering Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	filter tube pumping well groundwater drawdown waterproof curtain deep foundation pit dewatering Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Xuehan Zhang Xuwei Wang Yeshuang Xu Influence of Filter Tube of Pumping Well on Groundwater Drawdown during Deep Foundation Pit Dewatering
description	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.
format	article
author	Xuehan Zhang Xuwei Wang Yeshuang Xu
author_facet	Xuehan Zhang Xuwei Wang Yeshuang Xu
author_sort	Xuehan Zhang
title	Influence of Filter Tube of Pumping Well on Groundwater Drawdown during Deep Foundation Pit Dewatering
title_short	Influence of Filter Tube of Pumping Well on Groundwater Drawdown during Deep Foundation Pit Dewatering
title_full	Influence of Filter Tube of Pumping Well on Groundwater Drawdown during Deep Foundation Pit Dewatering
title_fullStr	Influence of Filter Tube of Pumping Well on Groundwater Drawdown during Deep Foundation Pit Dewatering
title_full_unstemmed	Influence of Filter Tube of Pumping Well on Groundwater Drawdown during Deep Foundation Pit Dewatering
title_sort	influence of filter tube of pumping well on groundwater drawdown during deep foundation pit dewatering
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f042dd103c1644d4814cf917ff1c46ab
work_keys_str_mv	AT xuehanzhang influenceoffiltertubeofpumpingwellongroundwaterdrawdownduringdeepfoundationpitdewatering AT xuweiwang influenceoffiltertubeofpumpingwellongroundwaterdrawdownduringdeepfoundationpitdewatering AT yeshuangxu influenceoffiltertubeofpumpingwellongroundwaterdrawdownduringdeepfoundationpitdewatering
_version_	1718410129993367552

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

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