Gas Shield rubber dam can maintain high water level upstream: gas shield rubber dam can maintain high water level upstream, improve the power generation capacity of hydropower stations. The gate creates a higher head of water and accurately controls the water level upstream. Accurate control of water level: Air Shield Rubber Dam can accurately control the water level and diversion flow of irrigation canal, when the flow of the canal changes, can automatically control the water level in front of the diversion buildings to ensure the uniformity of water diversion. Flood diversion function: air shield rubber dam can be applied to flood diversion work of river, so that river flow can be adjusted automatically. During the flood period, the upstream water level is automatically controlled to keep the water level low, and the sediment deposited in the upstream is carried away by the flood. Urban Landscape: Air Shield Rubber Dam can be installed landscape lights, produce a good night scene effect, enhance the image of the city. Navigation function: Air Shield Rubber Dam is an ideal form of upper and lower lock gates, which can accurately control the water level of upper and lower reaches to ensure the smooth passage of ships. At the same time, the complex gate opening and closing system is reduced, the operation is flexible and simple, and the construction and maintenance cost of the lock is reduced. Flood control function: air shield rubber dam can coordinate the relationship between spillway discharge capacity and reservoir storage level, and increase the storage capacity of the built reservoir. When the discharge capacity of existing spillway is insufficient, the crest height of Weir can be adopted without affecting the reservoir water level and power generation benefit.