Waterproof suspended ceiling structure for access tunnel of underground powerhouse

The utility model discloses a waterproof suspended ceiling structure of an underground powerhouse access tunnel, which comprises a suspender, a longitudinal keel, an arched transverse keel, a suspended ceiling plate, a drainage eave gutter and a drainage pipe, the longitudinal keel and the arched transverse keel are arranged at the top of the access tunnel, the suspended ceiling plate is an arched long plate with a groove at the top, and the drainage eave gutter is arranged at the bottom of the suspended ceiling plate. The U-shaped groove is formed in the bottom of the keel and installed at the bottom end of the keel in the direction of the arched transverse keel, two drainage eaves gutters in the longitudinal direction of the access tunnel are arranged on the tunnel wall and close to the lower portions of the left end and the right end of the suspended ceiling plate, vertical drainage pipes communicated with the drainage eaves gutters are arranged at the bottom of the U-shaped groove, and the bottom ends of