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随着中小流域综合治理规划工作的蓬勃开展和中小型坝库工程的大量兴建,我们会越来越迫切地感到需要有流域产沙量的资料。当前,估算中小流域产沙量的方法很多。利用泥沙输移比估算短缺泥沙资料情况下的中小流域产沙量则是目前欧美各国较为通用的方法之一。现结合我国黄河中游黄土丘陵沟壑区陕北大理河流域各干、支沟出口控制断面实测水沙资料,就泥沙输移比中的有关问题作如下探讨。一、泥沙输移比的定义
With the vigorous development of comprehensive management and planning of small and medium-sized river basins and the massive construction of small and medium-sized dam projects, we will increasingly feel the urgent need of information on sediment yield in the watershed. Currently, there are many ways to estimate sediment yield in small and medium-sized watersheds. It is one of the more common methods in various countries in Europe and America to estimate the sediment yield of medium and small watersheds by using the sediment transport ratio in the absence of sediment information. Based on the data of water and sediment measured at the exit and control sections of the Dali River in the Dali Region of the Loess Plateau in the middle reaches of the Yellow River in the middle reaches of the Yellow River, the following issues are discussed. First, the definition of sediment transport ratio