Rapid overhauling method for water conveyance canal without water supply shutdown

A channel and fast technology, applied in the field of rapid maintenance of water delivery channels, can solve the problems of high construction cost, unsatisfactory surface flatness, low construction efficiency, etc., and achieve high construction efficiency, low cost and effective efficiency improvement. Effect

Active Publication Date: 2019-05-28
中国南水北调集团中线有限公司河南分公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a rapid maintenance method for water delivery channels without stopping water, which solves the problem that the surface smoothness of the existing mold bag concrete after underwater filling cannot meet the requirements, and the construction cost is high and the construction efficiency is low. technical issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, a method for rapid maintenance of water delivery channels without stopping water, comprising the following steps:

[0029] S1, Demolition of the original structure: remove the damaged lining board in the water delivery channel, and level the area where the damaged lining board is removed; the lining board below the water surface shall be dismantled underwater by divers carrying a helmet equipped with a camera, and the lining board shall be removed with a slope The expansion joints set on the surface are the dividing line, and the demolition is carried out in a regular and orderly manner. Remove the entire lining board and ensure that the shape of the removed area is a relatively regular rectangle, in preparation for the hoisting of the mold bag skeleton.

[0030] S2, area division: divide the areas described in step S1, and divide them sequentially from upstream to downstream according to the direction of water flow, and perform repairs in order.

[0031]...

Embodiment 2

[0039] Embodiment 2, a method for rapid maintenance of a water delivery channel without stopping the water, when performing step S6 for hoisting and launching and step S7 for filling concrete, tighten the chain block and the sling of the crane, check and adjust the position of the mold bag, Make sure that the skeleton of the mold bag is perpendicular to the axis of the water delivery channel.

[0040] Other steps in this embodiment are the same as in Embodiment 1.

Embodiment 3

[0041]Embodiment 3, a method for rapid overhaul of a water delivery channel without stopping water. When performing step S6 for hoisting and launching and step S7 for filling concrete, the direction of the left and right banks of the water delivery channel is adjusted by the boom of the crane to adjust the position of the mold bag skeleton. In the upstream and downstream directions, hoists are used to adjust the position of the mold bag skeleton, and at the same time, divers control the distance between the bottom position of the mold bag skeleton and the undamaged lining board by measuring tools to be 30cm.

[0042] Other steps in this embodiment are the same as those in Embodiment 1 or 2.

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PUM

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Abstract

The invention discloses a rapid overhauling method for a water conveyance canal without water supply shutdown, and solves the technical problems that surface evenness after underwater charging of existing mold bag concrete cannot meet the requirement, construction cost is high and construction efficiency is low. The rapid overhauling method comprises following steps: original structure dismounting, regional division, manufacturing of a mold bag skeleton, mounting of a mold bag, manufacturing of a lifting frame, lifting launching, charging of concrete and dismounting operation. The rapid overhauling method for the water conveyance canal without water supply shutdown not only can guarantee the surface evenness after underwater charging of the mold bag concrete, but also is high in construction efficiency and low in cost, has quite high ecological benefit and social benefit and has quite good popularization and application prospects.

Description

technical field [0001] The invention relates to the technical field of water canal restoration, in particular to a rapid maintenance method for water delivery canals without stopping water. Background technique [0002] The Middle Route Project of the South-to-North Water Diversion Project mainly solves the water shortage problem in cities in Beijing, Tianjin and North China. It is an important basic strategic facility and a super-large water delivery structure. Its operating characteristics determine that water delivery cannot be interrupted under normal circumstances. During the operation, the concrete lining panel of the channel will be damaged due to different reasons. In order to ensure the normal water delivery of the channel, the lining panel needs to be repaired with water. The use of mold bag concrete for underwater filling is one of the technologies for quickly repairing lining panels, but the surface flatness of traditional mold bag concrete cannot meet the requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B5/02E02D15/00
Inventor 程德虎赵明勤秦卫贞杨旭辉李飞刘阳左丽赵文超付军姜波
Owner 中国南水北调集团中线有限公司河南分公司
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