Circular water-collecting well foundation pit bottom interception tool and construction method thereof

Abstract

The invention discloses a circular water-collecting well foundation pit bottom interception tool and a construction method thereof. The tool comprises a steel sleeve, a first L-shaped waterstop steelplate ring and a second L-shaped waterstop steel plate ring are welded to the outer side of the steel sleeve, and a round steel plate is welded to a lower opening. When a foundation pit is dug to thebottom, the steel sleeve is inserted into a circular water-collecting well, concrete is used for cushion construction, a waterproof layer is stuck to the pipe wall of the first L-shaped waterstop steel plate ring, and an additional waterproof layer and a waterstop belt are made. When a base plate waterproof layer is constructed, the waterproof layer is turned upwards to the bottom of the first L-shaped waterstop steel plate ring, waterproof close-up treatment is conducted with sealing cement gum, and then concrete is used for pouring. A round steel plate cap and an upper opening of the steel sleeve are welded to be sealed, a js waterproof coating is used for brushing, and finally concrete is used for pouring at the upper opening of the steel sleeve. Accordingly, the construction method issimple, professional training is not needed, the construction speed is high, the applied materials are commonly used materials on construction sites, the construction cost is low, and the waterproof effect is good. The tool has the high economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to an intercepting tool at the bottom of a foundation pit of a circular water collection well and a construction method thereof. Background technique [0002] In the construction of high-rise buildings, when the groundwater pressure is high, it is necessary to leave a water collection well on the foundation floor, and set a downwater pipe in the well, put the water pump suction pipe into the downwater pipe for pumping, and reduce the groundwater level through centralized pumping. Purpose. [0003] When the dewatering equipment needs to be removed after the foundation construction is completed, the water collection well should be treated and the wellhead foundation floor of the water collection well should be restored. The general recovery method is: after the precipitation is stopped, the downcomer is drawn out, gravel is buried in the water collection well and the bo...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an intercepting tool at the bottom of the foundation pit of a circular water collection well and its construction method to solve the problems of long construction time, poor waterproof effect, high material cost and troublesome operation and implementation in the prior art

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