The water source of the Long March Canal Project is taken from Qingyi River, and a large-scale storage reservoir, Xiangling Lake Reservoir, was built on Yingjing River in the upper reaches of Qingyi River. The water intake of the main canal is initially planned to draw water from Feixianguan reservoir area, the main stream of Qingyi River (the average annual inflow is 65.438+0.07 billion m3).
Water is introduced into Jinfeng Reservoir in Meishan City through a 66-kilometer-long tunnel, and from Jinfeng Reservoir across Minjiang River into Maoba Reservoir in Leshan City. The main canal extends eastward from Maoba Reservoir, and the south main canal controls the Minjiang River Basin in Leshan, Zigong and Yibin water supply areas in Renshou County, Meishan City. The total length of Sichuan canal system is 145 1.43km, of which the main canal is 2765438+.
The main construction contents of the Long March Canal Diversion Project (Chongqing Section) include the newly-built backbone water conveyance channel of about 575km (the main canal is about 155km, the north main canal is about 88km and the branch canal is about 332km).
The north main canal of Daping Town, Anyue County, Sichuan Province is about 88km long and controls the water supply range of Tongnan District, Tongliang District and Hechuan District. The main canal, about 155km long, enters Gaosheng Town, Dazu District, Chongqing from He Yi Township, Anyue County, Sichuan Province, and passes through Dazu, Yongchuan, Bishan and Jiulongpo to Huayan Town.
According to preliminary estimation, the total investment of the Long March Canal Project is about 654.38+66 billion yuan, including 654.38+65.4 billion yuan in Sichuan (including 20 billion yuan of new water consumption in Chongqing) and 56 billion yuan in Chongqing.