New method for plugging dewatering well in basement

Abstract

The invention discloses a new method for plugging a dewatering well in a basement. The method comprises the following steps: inserting a sand-free concrete pipe into the ground for 30 meters; jacketing a steel pipe on the sand-free concrete pipe and placing a dewatering pump for draining in the steel pipe; arranging a water-stopping ring at the middle part outside the steel pipe, wherein the water-stopping ring is formed by a steel plate with a diameter of Phi 1000*4; uniformly welding short reinforcing steel bars along the inner wall of the steel pipe in the position at least 800mm away from the top in the steel pipe, thereby forming a bracket; pouring concrete at the periphery of the steel pipe so as to form a swirl well base plate, wherein a pouring height is parallel to the height of the steel pipe; taking the dewatering pump out of the steel pipe after the concrete reaches a certain strength; placing a circular steel plate to the position of the bracket formed by the short reinforcing steel bars, and plugging a pipe opening; polishing beveled edges on the periphery of the circular steel plate and tightly welding the beveled edges and the inner wall of the steel pipe; pouring concrete into the steel pipe, wherein the pouring height is at least 20mm away from the top of the pipe opening; and after solidifying the concrete, covering with the circular steel plate, polishing beveled edges on the periphery of the circular steel plate and tightly welding the beveled edges and the inner wall of the steel pipe, and then flatting and sealing the top with cement plaster. The new method provided by the invention is used for efficiently solving the problem of plugging the dewatering well in the basement.

Description

technical field [0001] The invention relates to a construction method for drainage in civil construction, in particular to a method for sealing a dewatering well in a basement. Background technique [0002] In the prior art, dewatering construction must be carried out before earthwork excavation, and runs through the entire process of basement civil construction until the concrete strength of the basement floor reaches 100%. For example, Tangshan Wenfeng 4300 extra-thick plate project swirl well, according to the needs of precipitation, there are 12 holes outside the swirl well, and a precipitation well inside. The swirl well is a circular underground structure, mainly composed of inner and outer cylinders, platforms, slag It consists of ditches, etc., and is constructed by the reverse method. The outer diameter is Φ14m, the wall thickness of the outer cylinder is 1m, the outer diameter of the inner cylinder is Φ4.1m, the wall thickness of the inner cylinder is 300mm, the b...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem of the clogging of the dewatering wells existing in the above-mentioned prior art, the present invention provides a new method for blocking the dewatering wells in the basement, which consists of the following steps:

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