The stepped low-pressurized water diversion system is a new type of gravity water supply system,which is simple in structure and water conservation weir is the pivotal structure.

• 分段低压输水系统是一种结构相对简单,采用分段降低水头的新型自流有压引水结构,而保水堰则是分段低压输水系统的关键建筑物。