Channel steel cofferdam system for quickly repairing water channel slope lining

Abstract

The invention discloses a channel steel cofferdam system for quickly repairing a water channel slope lining. The system comprises a cofferdam body arranged in the slope direction of a channel slope lining plate; the cofferdam body consists of an inverted U-shaped section buckled on the channel slope lining plate, and a blockage unit tightly joined with the lower end part of the inverted U-shaped section; the inverted U-shaped section is formed by tightly connecting multiple sections of inverted U-shaped cofferdam body units with the same structures through flanges and sealing rings; and sealing devices, sinking or floating devices, sucking fixed devices and in-place devices are respectively arranged between the contacted surfaces of each section of inverted U-shaped cofferdam body unit and the channel slope lining plate and between the contacted surfaces of the blockage unit, the channel slope lining plate and a channel baseplate. The system has the following advantages: a steel cofferdam is simple in structure, modular in design and fast in scene installation and disassembly. Because of small water stop surface, the influence on the water transmission flow of a channel is lower, the storage, the transportation and the installation are convenient, and the system is more suitable for a water channel with special requirements on the water transmission flow.

Description

technical field [0001] The invention relates to a steel cofferdam system, in particular to a channel steel cofferdam system used for rapid repair of the lining of a channel slope. Background technique [0002] During the water delivery process of the channel, the concrete lining slab may be damaged such as cracking, collapse, and anti-floating instability. When the lining board is damaged, it will lead to an increase in local water head loss and damage to the anti-seepage system to a certain extent. In severe cases, the slope soil will soften and cause slope instability, which will affect the safe operation of the channel. If the embankment slope lining board is damaged and the flow-cutting measures are taken to repair it, it will seriously affect the domestic water and industrial water of urban residents along the canal project. Therefore, a special cofferdam is needed, which can not only form a dry land construction environment on and below the water surface of the canal ...

AI Technical Summary

Problems solved by technology

When the lining board is damaged, it will increase the local water head loss and damage the anti-seepage system to a certain extent. In severe cases, the slope soil will soften and the slope will become unstable, which will affect the safe operation of the channel.

If the embankment lining board is damaged and the measures to stop flow are taken to repair it, it will seriously affect the domestic water and industrial water of urban residents along the canal project

Therefore, a special cofferdam is needed, which can not only form a dry land construction environment on and below the water surface of the canal slope, and repair the damaged lining board, but also be convenient for transportation, fast installation and disassembly, and require a relatively small cross-sectional area of ​​the cofferdam. It has little impact on the water delivery volume of the canal, and realizes the goal of water supply while repairing and constructing, but it has not been reported in relevant reports so far.

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