On September 23, the top heading of the diversion tunnel A at DASU Hydropower Project was successfully breakthrough. This is another important milestone in the construction of the project after the diversion tunnel no. B was completed.
Two diversion tunnels with extra-large cross-sections has been designed. The D-shaped tunnels have 24.4 m width and 27.2 m height, and the total length is 2,765 meters.