河口海域水流挟沙能力分析

Analysis of sediment carrying capacity of estuarine waters

水流挟沙力是反映河床处于冲淤平衡状态下水流挟带泥沙能力的综合性指标。作者通过对众多挟沙力公式的分析比较，基于量纲和谐的考虑，建立了新的挟沙力公式形式。本文以长江口的泥沙输运为例，利用长江口泥沙实测资料，研究了新建立的挟沙力公式在长江口的适用性。计算结果表明，本文作者建立的公式在长江口具有一定的适用性，与刘家驹公式相比较，计算精度差不多，计算结果尚令人满意，但还存在一定的误差，说明将本文建立的挟沙力公式进行率定后，可以将其推广到近岸河口海域，为工程实践提供有益的参考价值。

Sediment carrying capadty is a reflection of sediment erosion and deposition in the river bed under a state of equilibrium, the capacity of sediment taking indicators syndrome. The author discussed formula, classification and summary of, and Through many sediment analysis formula and dimensional analysis, a new formula sediment form based on having read a lot of related documents of many scholars. In this paper, the author of the Yangtze River estuary sediment transport as an example, the measured use of the Yangtze River estuary sediment, the study established the new formula in the rudiment of the applicability of the Yangtze River estuary. The results show that the author of this article has established the formula in the Yangtze Delta has some applicability, and Chia-Chu Liu, compared to the formula to calculate the accuracy of more or less the same result is still satisfactory, but there are some errors in this article that will force the establishment of the sediment rate formula can be extended to the mouth of the sea-shore, in order to provide a useful practice reference value.