Solutions
Four solutions are summarized for different scenarios: defect treatment of hydropower engineering, defect treatment of high-speed rail transit engineering, defect treatment of water resource environment engineering, and defect treatment of new energy power generation engineering
Underwater lining plate repair project of the South-to-North Water Diversion Project
- Project Background:
The middle route of the South-to-North Water Diversion Project Phase I commenced construction in December 2003 and officially started water diversion in December 2014. With a total length of 1432 kilometers, it draws water from the Tao Cha intake at Danjiangkou Reservoir. Along its route, canals were excavated, passing through the western part of the Tangbai River basin, crossing the watershed of the Yangtze River and Huaihe River basins at Fangchengya Pass, and running along the western edge of the Huang-Huai-Hai Plain. It provides drinking and industrial water to 19 large and medium-sized cities, including Beijing and Tianjin, and over 100 counties (county-level cities) in the North China Plain. It also serves agricultural water needs. The average annual water diversion volume is 9.5 billion cubic meters. The project mainly uses open-channel water conveyance, with partial use of culverts. The design flow rate at the intake is 350 cubic meters per second, with a maximum flow rate of 420 cubic meters per second. The open channel surface uses prefabricated lining plates for seepage prevention. After commissioning, some lining plates cracked and require underwater replacement. The new lining plates use a snap-fit structure. After assembly, the joints need to be sealed and protected with an effective filling material. The protective material must be suitable for underwater construction and able to accommodate deformation and displacement of the lining plate structure.
- Solution:
Underwater replacement and installation of new prefabricated lining plates, with seams filled using MB plastic filler and MB-963 underwater epoxy coating adhesive.
- Material Selection:
MB-963 underwater epoxy coating adhesive (invention patent product), MB plastic filler;
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