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目前,在渠道的输水损失计算方面,还有二个问题尚待解决。一是均质渠道上流量沿程如何变化;二是在渠道任意两断面上若测得流量分别为 Q_1 和 Q_2,且两断面之间的距离已知为 l,如何求得该渠道每公里水利用系数和整个渠道水利用系数。解决这两个问题,无论是对渠道设计流量的选择,还是对现有渠道的观测、评价都是很有现实意义的。
At present, there are still two problems to be solved in the calculation of the water conveyance loss in the channel. First, the homogeneous channel flow along the way how the change; Second, if the measured flow on any two sections of the channel were Q_1 and Q_2, respectively, and the distance between the two sections is known as l, how to find the channel water per kilometer Utilization factor and the entire channel water utilization factor. To solve these two problems, both the choice of channel design flow and the observation and evaluation of existing channels are of great practical significance.