The pneumatic shield gate is a combination of a row of reinforced steel plate, supported at the downstream of each section of the steel plate by a special inflatable air bag. The pneumatic shield gate system is mainly composed of the steel gate, air bag, embedded parts, air compression system and control system, which raises and falls the steel gate through air bag inflating and exhausting by the principle of air compression to maintain a specific water level. Gate top overflow is allowed. When the gate is fully open, all gate body lies at the bottom of the river, which allows high efficiency discharge without affecting the landscape and navigation. When the gate is fully closed, the water can be stored, and the overflow landscape can be formed when the water level is above the set level.
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