长江上游推移质泥沙输沙率公式检验

适用于长江上游的推移质输沙率计算公式还未得到普遍接受。选取八个代表性公式，采取分散度比较法，利用长江上游8个测站（点）共计1290组实测资料对其进行检验。分析发现：（1）Engelund-Hansen公式精度相对最高，Yalin公式次之；若计算水流强度和输沙强度大的河流（如乌江、虎跳峡上峡口）时，Park公式计算精度较高。（2）各家公式并不适用于受下游峡谷洪水期雍水影响的河段（如奉节河段）。

verification on the formula of bed-load sediment transport rate in the upstream of Yangtze River

As no sediment transport formulae suitable for the upper Yangtze river is universally accepted. Based on the analysis on data from 1290 sets of field observation in 8 sites in the upstream of Yangtze River , employed dispersion degree method, verification is carried out for 8 formulae about bed-load sediment transport rate. In general, Engelund-Hansen formula has the maximum relative precision, Yalin formula followed next; calculation as in the river of high flow intensity and transport intensity, Parker formula has relatively high accuracy. These formulae are not suitable for the backwater reach of canyon.