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CRD middle partition wall reserving and water sealing flange welding construction technology

A technology of water-stop flange and construction technology, which is applied to shaft equipment, shaft lining, mining equipment, etc. It can solve the problems of complicated procedures, large ground and pipeline settlement, etc., so as to speed up the construction progress, ensure construction safety, and avoid ground and The effects of pipeline settlement effects

Inactive Publication Date: 2014-03-12
CHINA RAILWAY 18TH BUREAU GRP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the second lining is constructed to remove the temporary middle partition, the process is complicated, and it is easy to cause large ground and pipeline settlement

Method used

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  • CRD middle partition wall reserving and water sealing flange welding construction technology
  • CRD middle partition wall reserving and water sealing flange welding construction technology

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Embodiment Construction

[0019] During the construction of the second lining, the I-beam on the middle partition of the underground excavation tunnel is temporarily reserved, and the water-stop flange is welded within the range of the second lining on the top and bottom of the I-steel, and the waterproof board is laid along the "L" shape of the middle partition, and metal steel hoops and water-resistant Expansive water-stop glue strengthens the construction process of waterproofing.

[0020] The welded water-stop flange within the second lining range of the I-beam top and bottom of the temporary middle partition is that the temporary middle partition within the second lining range is welded with a 5mm steel plate as the water-stop flange, and the size of the water-stop flange steel plate is 420×300mm, divided into two parts. A piece of steel plate is processed and butted, and then welded tightly with the I-beam. After the welding of the water-stop flange is completed, apply 2cm wide and 1cm thick wate...

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Abstract

The invention belongs to the field of metro construction and relates to an invisibly-excavated CRD middle partition wall reserving and water sealing flange welding construction technology. In the time of construction of two linings, temporary middle partition wall joist steel is reserved in an invisibly-excavated channel, a water sealing flange is welded in the range of the two linings on the bottom and the top of the joist steel and a water sealing flange is welded on the top of the middle partition wall joist steel. Each water sealing flange is machined with two steel plates and formed in an abutted connection mode. Afterwards, the water sealing flanges are tightly welded with the joist steel. After welding, water sealing glue which expands when encountering water is sprayed onto the upper portions of the water sealing flanges. The water sealing glue is sprayed around the temporary middle partition wall joist steel. A waterproof plate is in an L shape and is laid upwards along the bottom of the temporary middle partition wall joist steel. The waterproof plate and the middle partition wall joist steel are fixedly stuck through adhesive tape. A corner between the bottom of the temporary middle partition wall joist steel and the L-shaped waterproof plate is filled with waterproof mortar. The waterproof plate and the waterproof mortar are stuck with adhesive tape. The outer side of the upper portion of the waterproof plate is hooped with a metal hoop. By means of the technology, the integrality of the waterproof plate is improved, the waterproof effect is better, construction process is accelerated and construction cost is reduced.

Description

technical field [0001] The invention relates to a construction technique for water-proof treatment of a temporary intermediate partition in the construction of a "CRD" large section. Background technique [0002] With the continuous improvement of subway construction technology, the underground engineering field has continued to innovate, and many methods of shallow burial and underground excavation construction methods have been proposed. Among them, the CRD construction method of "dividing the whole into parts" is a very representative construction method, also known as "crossover". Middle next door construction method". This method takes the pre-reinforcement (treatment) of the ground as the premise, and is based on the anchor and net spraying support. The settlement and convergence of the vault of the supporting structure ensure the safety of the excavated chamber and the ground buildings. Compared with the open-cut method and the cover-build method, the biggest advant...

Claims

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Application Information

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IPC IPC(8): E21D11/38E21D11/00
Inventor 黄广锴姜华龙雷崇红营升黄良冰
Owner CHINA RAILWAY 18TH BUREAU GRP CO LTD
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