Flood control reservoir with locks, canals and draining valves

摘要

must be the airlock to water discharge from the container to the river when the water in the river. the channel should be by the tank length and lined with tiles, 70 cm high and to the channel was from underneath to the airlock. shafts to downwards so as to reduce the water was pouring out elsewhere and not cause loss and damage. the lock should be raised to the top, not wider as to 50 cm.