Auxiliary drainage system for airport reservoir

The invention belongs to the technical field of intelligent airport drainage equipment, and particularly relates to an auxiliary drainage system for an airport reservoir. According to the main structure, the auxiliary drainage system includes the airport reservoir, a safety grid water storage gate, an external drainage channel, a flood drainage pump, a flood drainage gate, a river channel and an isolation layer; the external drainage channel is divided into an upper layer and a lower layer, a main drainage channel is arranged on the upper layer, and an auxiliary drainage channel is arranged onthe lower layer; the isolation layer is provided with underground hole partition plates, the underground hole partition plates are provided with small holes, and the underground hole partition platescommunicate the main drainage channel with the auxiliary drainage channel through the small holes; the auxiliary drainage channel is arranged in a drainage device, and when the drainage volume is small, drainage can be conduc