Introduction
The North Main Canal of the Chianan Canal transports water from the Wushantou Reservoir for agricultural, industrial, and domestic use, significantly contributing to stabilizing agricultural production, industrial development, and economic growth in the Chianan region.
The North Main Canal is approximately 47 km long, and the original canal structure was built with a trapezoidal thin lining. After maintenance in the 1950s and more than 50 years of operation, some sections have been updated or improved, while the majority still require further work. Due to displacement in the 4K+490 to 4K+685 section, which has caused severe damage and leakage in the lining, this section has been upgraded to an inverted E-shaped structure. This upgrade aims to ensure safe water delivery, reduce water leakage, and prevent damage to the canal from affecting downstream irrigation.
The North Main Canal is approximately 47 km long, and the original canal structure was built with a trapezoidal thin lining. After maintenance in the 1950s and more than 50 years of operation, some sections have been updated or improved, while the majority still require further work. Due to displacement in the 4K+490 to 4K+685 section, which has caused severe damage and leakage in the lining, this section has been upgraded to an inverted E-shaped structure. This upgrade aims to ensure safe water delivery, reduce water leakage, and prevent damage to the canal from affecting downstream irrigation.
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