Open caisson sealing bottom water drainage device and construction method

A technology of drainage device and construction method, applied in caisson, infrastructure engineering, construction and other directions, can solve the problems of high leakage plugging treatment cost, high investment cost, water leakage at the bottom of the sealing layer, etc., to improve engineering efficiency, low investment cost, installation handy effect

Inactive Publication Date: 2013-05-08
CHINA MCC17 GRP
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  • Abstract
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  • Claims
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Problems solved by technology

[0002] In the existing drainage method for caisson bottom sealing, generally, a sump is reserved in the crushed stone layer at the bottom of the deep well, and then the water in the sump is drained, and then the bottom concrete is poured directly. Part of the concrete cement slurry is taken away during the rise of

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  • Open caisson sealing bottom water drainage device and construction method
  • Open caisson sealing bottom water drainage device and construction method

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Embodiment Construction

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] In the figure, the caisson bottom sealing drainage device of the present invention is mainly composed of a well pipe 1, a filter screen 2, a head cover 3, a water permeable hole 4, a wire tooth 5, an iron wire 6, a water permeable layer 7, a slurry layer 8, a water suction pipe 9, The back cover concrete 10 and the caisson floor 11 are composed.

[0020] The top of the well pipe 1 is connected with a head cover 3, the lower pipe wall is evenly provided with water permeable holes 4, and the bottom end of the well pipe 1 and the lower part of the pipe wall with the water permeable holes 4 are provided with a filter screen 2. 2 is fixed to the lower part of the well pipe 1 through the iron wire 6 . The head cover 3 is connected with the well pipe 1 through the wire teeth 5 . The filter screen 2 is a three-layer dense mesh screen.

[0021] A construction method usi...

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Abstract

The invention discloses an open caisson sealing bottom water drainage device and a construction method. The device comprises a well tube. A head sealing cover is connected with the top of the well tube. Water permeable holes are evenly formed in a tube wall on the lower portion of the well tube. Filter screens are arranged on the outer side of the tube wall of the lower portion of the well tube and at the bottom of the well tube, wherein the outer side of the tube wall is provided with water permeable holes. The head sealing cover is connected with the well tube through threads. The filter screen is a three-layer dense screen sheet and fixed on the lower portion of the well tube through an iron wire. The open caisson sealing bottom water drainage device has the advantages of being simple in manufacture, convenient to install, good in open caisson sealing bottom water draining and water sealing effect, low in investment cost and capable of improving project efficiency.

Description

technical field [0001] The invention relates to a caisson construction device in a construction project, in particular to a caisson bottom sealing drainage device. Background technique [0002] The existing drainage method for caisson bottom sealing generally uses a sump pit reserved in the gravel layer at the bottom of the deep well, and then the water in the sump is drained, and then the bottom sealing concrete is poured directly. This construction method is used before the initial setting of the bottom sealing concrete. When the groundwater level rises at the bottom of the well, taking away part of the concrete cement slurry often causes water leakage at the bottom of the sealing layer. Generally, after sealing the bottom, use plugging king or chemical grouting to repair the leakage. large, and there are security risks. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a caisson bottom sealing drainage device which is simple in manufa...

Claims

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Application Information

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IPC IPC(8): E02D23/16E02D19/20
Inventor 匡恒
Owner CHINA MCC17 GRP
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