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一、什麽是年迳流不均匀系数? Cr图的作用和性质怎样? 年迳流分配不匀系数Cr,是用来表示年迳流在年内分配不均匀的特性的数值。它可以告诉我们,要把年迳流完全调节均匀,需要多大的库容,和一条河流洪水季与枯水季水量分配情况的概念。但它的数值并不是库容V的绝对数值,而是采取年内完全调节所需库容与年水量的比值来表示,即Cr=V年调节库容/Qcp×365×86,400。Cr愈大的河流,说明所需完全调节的库容V也愈大。如下图的流量过程线为一年
First, what is the annual non-uniform flow? The role and nature of the Cr-diagram? Annual flow distribution unevenness coefficient Cr, is used to indicate the annual flow of non-uniform distribution of the value of the year. It can tell us the notion of a complete regulation of the annual flow, how much storage capacity is required, and the concept of the distribution of water in the flood and dry season of a river. However, its value is not the absolute value of the storage capacity V, but rather it is expressed as the ratio of the required capacity to the annual amount of water to be fully adjusted during the year. That is, the adjusted storage capacity of Cr = V / Qcp × 365 × 86,400. The larger the Cr, the greater the V that needs to be fully regulated. The flow chart below is one year