To put it simply: the diversion tunnel is part of the diversion structure of the diversion type hydroelectric power station. It guides the water in the upper reaches of the river to near the power plant, then uses the pressure pipe to divert it. water in the hydroelectric generator to produce electricity. The tailpipe tunnel is used to divert water after electricity generation.
Not all hydroelectric power plants have diversion tunnels and tailpipe tunnels. hydropower plants do not have leakage tunnels.
Because if the depth of the reservoir is large, sunlight cannot reach the bottom of the reservoir, resulting in high surface temperature of the tank and a high background temperature. low, resulting in stratification of water temperature.
The water inlets of hydroelectric power stations are generally located ins the middle and lower parts of the tank depth, and the waste water coming out naturally has a low water temperature.
Low waste water temperature caused by water temperature stratification has a significant impact on fish reproduction and plant growth downstream.