194.3 KM Long Tunnel to Make Up the Faults of the $77 Billion Water Transfer Project

194.3 KM Long Tunnel to Make Up the Faults of the $77 Billion Water Transfer Project

194.3 KM Long Tunnel to Make Up the Faults of the $77 Billion Water Transfer Project

Megaprojects Failure. On October 13, 2021, China South-to-North Water Diversion Corporation held a meeting in Wuhan and announced the establishment of the preparatory group for a large-scale water conservancy project, which we’ll refer to as the YRH Project, that transfers water from the Yangtze River to replenish the Han River. The Danjiangkou reservoir on the Han River is the water source for the South-to-North water transfer project, which we’ll refer to as the SN project. It was designed to transfer about 10 billion tons of water to the North per year. The chairman of the SN Diversion Corporation requested to accelerate the preparatory work for the construction of the YRH project and to ensure its completion before the end of this year. The YRH project is the first follow-up project to the 77billion US Dollar SN Project, with a total budget of about 11billion US DOLLAR, making it undoubtedly another mega water transfer project. Expenditures for the SN project are huge. Why is there such a large-scale follow-up project? The main function of the YRH project is designed to divert water from the Yangtze River to replenish the Han River. The water intake facility will be on the north bank of the Three Gorges Reservoir, just 7.5 km upstream of the Three Gorges Dam. Through a 194.3 km long tunnel, the water will be diverted to the Han river at 5 km downstream of the Danjiangkou reservoir dam. The equivalent water passage diameter of the diversion tunnel is 10.2 meters; the flow rate is 170 to 212 cubic meters per second. The altitudes of the inlet and outlet of the tunnel are 127 m and 73 m respectively, so the water will flow naturally in the tunnel, diverting a total volume of 3.9 billion cubic meters of water from the Yangtze River to the Han river every year. So why does the Chinese government want to build this water diversion project?