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dewatering

dewatering The removal of ground-water to reduce flow-rate or diminish pressure. Methods used depend on the permeability of the ground, proximity of hydrogeologic boundaries (see HYDRAULIC BOUNDARY), storage coefficient of the soil, pressure, and hydraulic gradient. Methods used include abstraction by wells, electro-osmosis, sumps and drains, vertical drains, or exclusion by grouting, compressed air, or freezing techniques (see ARTIFICIAL FREEZING). Dewatering is usually undertaken to improve conditions in surface excavations and to help construction work at or near the surface.

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dewatering

dewatering The removal of groundwater to reduce flow-rate or diminish pressure. Methods used depend on the permeability of the ground, the proximity of hydrogeologic boundaries (see hydraulic boundary), the storage coefficient of the soil, pressure, and hydraulic gradient. Methods used include abstraction by wells, electro-osmosis, sumps and drains, vertical drains, or exclusion by grouting, compressed air, or freezing techniques. Dewatering is usually undertaken to improve conditions in surface excavations and to help construction work at or near the surface.

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"dewatering." A Dictionary of Ecology. . Encyclopedia.com. 21 Jul. 2018 <http://www.encyclopedia.com>.

"dewatering." A Dictionary of Ecology. . Encyclopedia.com. (July 21, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/dewatering-0

"dewatering." A Dictionary of Ecology. . Retrieved July 21, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/dewatering-0

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American Psychological Association

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