Cavern and gate design method combining construction diversion and flood discharge adjustment

The invention discloses a construction diversion and flood discharge adjustment combined cavern and gate design method which comprises the steps that S100, a first gate and a second gate are disassembled, the disassembled first gate can move between a first position and a second position, and when the first gate is located at the first position, the second gate is located at the second position; the bottom of the first gate abuts against the top of the second gate to block the diversion tunnel, and when the first gate is located at the second position, the first gate and the second gate are separated to form a fluid channel for liquid circulation; and S200, the second gate is fixed. It should be understood that when the diversion tunnel is changed into the discharge tunnel, the first gate is more used as a service valve. And when the first gate descends to the first position, the diversion tunnel is blocked. And then the first valve located at the tail end of the diversion tunnel is opened, so that water loca