Damping structure of upstream waterstop plane gate and damping method

The invention discloses a damping structure of an upstream waterstop plane gate and a damping method. According to the damping structure, a group of vertical exhaust pipes (2) distributed uniformly inthe plane direction of the gate (1) are arranged in the gate (1); bent pipes (3) are arranged at the upper ends of the vertical exhaust pipes (2) correspondingly, and air outlets (4) of the bent pipes (3) are located on the downstream surfaces of gate top beam rear flange plates (5) or on the downstream surfaces of gate lifting lug rear flange plates (6) and communicate with the air; and air inlets (7) in the lower ends of the vertical exhaust pipes (2) are located on the bottom surfaces of gate bottom obtuse angle cross beam webs (8) and communicate with cavities on the downstream surfaces of bottom water seals (9). According to the damping structure of the upstream waterstop plane gate and the damping method, air at the bottom edge of the downstream side of the gate can be exhausted into air at the top of the g