Abstract
Taking Shahe and Dalang River aqueducts as an example, this paper introduces a movable and reusable waterproof device for aqueduct construction, which is suitable for construction scheme of structure repair and waterstop belt replacement for large-scale water delivery aqueduct of Shahe River and Dalang River in South-to-North Water Diversion Project. It aims to solve structural damage and waterstop belt leakage of the aqueducts of Shahe River and Dalang River in the South-to-North Water Diversion Project, realizing the aqueduct construction with uninterrupted water supply, and structure repair and waterstop belt replacement in the waterless environment separated by watertight device in the aqueduct construction.
Highlights
Shahe Aqueduct Project of the middle route of the South-to-North Water Diversion Project is located in Lushan County, Pingdingshan City, Henan Province, China
In middle route of South-to-North Water Diversion Project, the aqueduct is an integral part of water delivery
Since the aqueduct has been reinforced concrete U-type aqueduct structure, the joints need to be installed with waterstop belts of rubber material
Summary
Shahe Aqueduct Project of the middle route of the South-to-North Water Diversion Project is located in Lushan County, Pingdingshan City, Henan Province, China. The replacement and repair treatment scheme for the waterstop belt is to close the upper and lower gates of the whole aqueducts, or close the upper and lower gate of a certain aqueduct, and pump out the water in the aqueduct, forming a dry working environment to repair the aqueduct structure or replace the waterstop belts. This scheme of drainage has the defect of large pump output, low construction efficiency, long construction period and high cost. With the use of watertight device in the structure repair or waterstop belt replacement scheme, the construction can be carried out under the condition of uninterrupted water supply, which will greatly simplify the entire repair process, improve efficiency, ensure the rapid recovery of aqueduct service, and bring significant economic and social benefits
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