A construction method for point dewatering in deep wells

Abstract

The invention discloses a construction method of deep well point dewatering. The problem of inconvenient installation of a dewatering well pipe at present is solved. According to key points of the technical scheme, the construction method of deep well point dewatering comprises the step S500 of installing a dewatering well pipe, the dewatering well pipe comprises a plurality of unit well pipes, afirst installation ring table is arranged at the lower end of the inner wall of each unit well pipe, at least three T-shaped convex blocks are uniformly distributed in the circumferential direction ofthe bottom surface of each first installation ring table, a second installation ring table is arranged at the upper end of the inner wall of each unit well pipe, a T-shaped sliding groove matched with the corresponding T-shaped convex blocks is formed in the top surface of each second installation ring table, and a chute insertion port for the corresponding T-shaped convex blocks to be inserted is formed in one end of each T-shaped sliding groove. By adopting the construction method of deep well point dewatering, the dewatering well pipe is easy to assemble and high in assembly quality.

Description

technical field [0001] The invention relates to a building construction method, in particular to a construction method for deep well point dewatering. Background technique [0002] Deep well point dewatering is the most widely used dewatering method in foundation pit support. Its advantages are large drainage, large precipitation depth, and large precipitation range. For occasions where the permeability coefficient of the sand and gravel layer is large and the thickness of the aquitard is large, the methods of light well point and jet injection are generally not effective, and the construction method of deep well point dewatering is generally used for dewatering. [0003] The well pipes used in deep well point dewatering at this stage generally use corrugated pipes and sand-free pipes. The connection of the adjacent corrugated pipe or sand-free pipe is relatively cumbersome and the quality of the connection needs to be improved. Contents of the invention [0004] The obj...

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Problems solved by technology

[0003] The well pipes used in deep well point dewatering at this stage generally use corrugated pipes and sand-free pipes. The connection of the adjacent corrugated pipe or sand-free pipe is cumbersome and the quality of the connection needs to be improved

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