Construction dewatering and groundwater control new methods and applications pdf

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construction dewatering and groundwater control new methods and applications pdf

(PDF) Dewatering in Construction Works | Obasiochie Kenechukwu -

You are currently using the site but have requested a page in the site. Would you like to change to the site? Patrick Powers , Arthur B. Corwin , Paul C. Schmall , Walter E.
File Name: construction dewatering and groundwater control new methods and applications
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Published 15.01.2019

An Introduction to Methods of Dewatering and Groundwater Control Pdf Download

Dewatering & Groundwater Control

Dewatering systems are routinely used in the construction industry to provide temporary reductions in ground water levels for structures which extend to below groundwater level. Groundwater control extends this definition to encompass any pumping or recharge system used to manipulate groundwater levels for a range of purposes. This can be achieved in a variety of ways. The simplest form of groundwater control is sump pumping where groundwater is collected in a sump and pumped away from the excavation site. Sump pumping can be hugely cost effective, but excessive seepage and ground loss into the excavation can be both expensive and time consuming to deal with and can pose a real threat to the instability of the ground and adjacent structures.

Construction Dewatering and Groundwater Control: New Methods and Applications, Third Edition. Author(s). J. Patrick Powers P.E., · Arthur B.
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Construction dewatering, unwatering, or water control are common terms used to describe removal or draining groundwater or surface water from a riverbed , construction site , caisson , or mine shaft , by pumping or evaporation. On a construction site, this dewatering may be implemented before subsurface excavation for foundations, shoring, or cellar space to lower the water table. This frequently involves the use of submersible "dewatering" pumps , centrifugal "trash" pumps, eductors, or application of vacuum to well points. A deep well typically consists of a borehole fitted with a slotted liner and an electric submersible pump. As water is pumped from a deep well, a hydraulic gradient is formed and water flows into the well forming a cone of depression around the well in which there is little or no water remaining in the pore spaces of the surrounding soil.

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