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渠道跌水电站设计要不要考虑泥沙影响,开始我们的认识是不足的,因此最先建的跃进电站没有冲砂设备.实际,跃进电站发电后大量泥砂淤积在前室和进水闸,将拦污栅都埋掉了三分之一,每年淤砂300～400立方米,需要花大量人工清砂.泥砂堆积在闸门前减少了进水闸过水断面,加大了水头损失,减少了发电出力,粗颗粒泥砂还会磨损水轮机,影响设备使用寿命.因此后建的加来、兰马、加悦等电站都做了冲砂设备.
Channel fall or power station design should not consider the impact of sediment, the beginning of our understanding is not enough, so the first construction of the Yuejin Power Station does not have red sand equipment.In fact, a large number of silt sedimentation in the antecedents and floodgates, The gates are buried one-third of every 300-400 cubic meters of silt sand, need to spend a lot of artificial sand. Sediment accumulation in front of the gate to reduce the over-water intake section, increasing the head loss, reducing the power output, Coarse particles of sand will wear water turbines, affecting the service life of equipment, so after the construction of Canada, Lamma, Canada and other power plants have done a red sand equipment.