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装设在进水结构物及水电站水轮机段进口前的攔污栅,它们的运行经验及实地研究资料表明:攔污栅处水位的实际降落值,通常大大超过用计算方法所求得的降落值。上述情况说明了现有的计算公式没有考虑到对攔污栅的水头损失有很大影响的一系列重要因
The trash rack installed before the inflow structure and the inlet of the turbine section of the hydropower station have their operational experience and field research data showing that the actual landing level of the trash rack is usually much larger than the calculated landing value . The above situation shows that the existing calculation formula does not take into account a series of important factors that greatly affect the head loss of the trash rack