我国北方地区许多灌溉抽水站,一般均从多泥沙的水源取水,大量泥沙通过水泵,不仅使水泵过流部分遭到强烈的磨损,而且对水泵的工作参数(流量Q,功率N,扬程H,效率η等)也有显著的影响,出现流量降低,电动机超载,严重时引起机组振动,供水中断。因此各有关单位对这一问题都非常重视,并相继开展了一些观测研究工作,取得了一定的成 Many irrigation pumping stations in the northern region of our country generally take water from the sediment source. Large amounts of sediment pass through the water pump, which not only causes excessive wear of the pump overcurrent section, but also influences the working parameters (flow rate Q, power N, H, η efficiency, etc.) also have a significant impact, there flow reduction, motor overload, causing severe vibration unit, water supply interruption. Therefore, all relevant agencies attach great importance to this issue and have carried out some observational and research work one after another and made certain achievements