The Dadankou reservoir project is mainly composed of two parts: the reservoir hub project and the irrigation area project. The Dadankou reservoir hub is mainly composed of three parts: the dam, the power plant and the switch station, and the irrigation water intake building. The catchment area of Datankou Reservoir dam site is 1330km2, the average annual discharge at the dam site is 24.2m3/s, and the annual runoff is 763 million m3. The hub project is of large (2) type II, and the permanent main structure, such as the barrage, spillway and water intake, is of grade 2. Permanent secondary buildings energy dissipation anti - impact buildings are level 3.

The reservoir project has a total of 5 sets of spillway QHLY-2x1600KN-8m hydraulic hoist, are designed and manufactured by our company.