【Daily Question】Utilities - Civil Engineering - 20200710
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Judgment: In soils with a high permeability coefficient and abundant groundwater, the pipe well dewatering method should be given priority. ( ) Answer: Correct
Correct. Wellpoint dewatering methods include light wellpoints, electroosmotic wellpoints, jet wellpoints, pipe wellpoint systems, and deep wellpoint systems. (1) When the foundation pit is deep and the groundwater level is high, multiple stages of dewatering wells are required when using light well points ； (2) When the dewatering depth exceeds 8 m, jet well points are advisable; the dewatering depth can reach 8–20 m ； (3) In soil layers with a high permeability coefficient and large groundwater levels, tube well dewatering is advisable ； (4) When the precipitation depth exceeds 15 m, and ordinary submersible pumps and centrifugal pumps used in tube well dewatering systems are insufficient to meet the dewatering requirements, the depth of the tube wells can be increased, and deep well pumps, or deep well dewatering systems, can be employed instead.