长距离分段低压输水的水力特性

Hydraulic Characteristics of Stepped Low-pressure Long-distance Wa ter Delivery System

分段低压输水系统能很好地满足适时、适量输水及保护水质的要求,又避免了通常有压输水承受高水头的不利影响,在长距离输水中具有其明显的优越性通过对长距离分段低压输水水力仿真模拟,对分段低压输水的水力衔接、壅水、水面振荡及结合井的稳定性等进行研究。

To avoid the negative effects of high water pressure,the stepped low-pressure water delivery system is adopted for a long dis-tance water diversion project.In this paper,the hydraulic transient process for stepped low-pressure water delivery system is calculated by numerical model,and the height of backwater,the oscillation of water level in surge swell and the stability of water delivery system are investi-gated.