Method for blocking large-pipe-diameter rainwater pipeline through short air bag

A large-diameter, air-bag technology, applied in waterway systems, water supply devices, buildings, etc., can solve problems such as aggravating the difficulty of use, unable to fully resist external water pressure, etc., to protect cultivated land, eliminate dam head sequelae, and have wide applicability Effect

Active Publication Date: 2015-05-13
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP OF THE FIFTH ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the blockage relies on the tight combination of the air bag and the inner wall of the pipe to block the flow of water, when the water pressure is greater than 3 meters, the friction between the air bag and the pi

Method used

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Example Embodiment

[0054] Example:

[0055] This embodiment discloses a method of using short airbags to block large-diameter rainwater pipes, which mainly solves the problems existing in the process of blocking large-diameter rainwater pipes. Compared and summarized, and finally optimized and innovated the method of using short airbags to block large-diameter rainwater pipes, the specific steps are as follows:

[0056] (1) Use steel sheet piles to reinforce pipelines and excavate foundation pits;

[0057] (2) Clean up the debris within 2m of the upstream pipeline of the well chamber to ensure that no sharp objects puncture the short airbag;

[0058] (3) Arrange a short airbag in the first section of pipeline upstream of the well chamber, with the inflatable end facing the side of the well chamber, and fix the short airbag firmly;

[0059] (4) Connect the short airbag with the air compressor;

[0060] (5) Check the three-way air valve to make it inflated;

[0061] (6) Start the air compressor ...

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Abstract

The invention discloses a method for blocking a large-pipe-diameter rainwater pipeline through a short air bag. The method includes the following steps that firstly, the pipeline is strengthened, and a foundation pit is excavated; secondly, impurities are removed; thirdly, the short air bag is arranged, and fixing is firm; fourthly, the short air bag is connected with an air compressor; fifthly, a three-way air valve is checked; sixthly, pressurizing and inflating are conducted; seventhly, sealing is achieved; eighthly, after work is completed, the three-way air valve is adjusted, and exhausting is conducted; ninthly, the short air bag is pulled out. According to the method for blocking the large-pipe-diameter rainwater pipeline, the short air bag is used for blocking the drain pipeline, the problems that that great danger exists in the brick wall detaching work, blocked residues can be hardly removed thoroughly, rubbish mixed in fluid in the pipeline may block the pipeline, and the use safety of the pipeline is affected are solved, the purchase cost and the use cost are saved, the time cost of the construction progress is saved, various costs are reduced, the construction cost is reduced, the economic benefits are improved, underground unmanned work is achieved, the safety of workers is ensured, and the construction period is shortened.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a method for blocking large-diameter rainwater pipes by using short airbags. Background technique [0002] At present, some domestic manufacturers have produced airbags suitable for pipeline sealing. Airbags are easy to operate and low in price, so they are widely used in urban pipeline sealing. However, the size and weight of the large-diameter blocking airbag are often too large, which increases the difficulty of storage, transportation and use. Since the blockage relies on the tight combination of the air bag and the inner wall of the pipe to block the flow of water, when the water pressure is greater than 3 meters, the friction between the air bag and the pipe wall cannot completely resist the external water pressure. In order to increase the friction, the manufacturer had to increase the length of the blocking airbag, but the overly long airbag made it more difficult to...

Claims

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Application Information

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IPC IPC(8): E03F7/02
CPCE03F7/02
Inventor 苏春生
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP OF THE FIFTH ENG
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