三峡库区中小流域产沙数学模型

Mathematical model on sediment yield of middle/small watershed at the area of the Three Gorges Reservoir

本文旨在探讨三峡库区中小流域的产沙数学模型,分析研究库区主要环境因子对流域产沙的影响,推导出流域产沙量的计算,与产流计算公式一起,构成了概念清楚、过程明确、结构完整的流域产沙模型.将该模型用于三峡库区部分流域的产沙验证计算,结果令人满意.

This paper is to study a sediment yield model of middle / small watershed at the area of Three Gorges Reservoir. Based on the influence of environmental factor on the sediment yield from watershed, a calculation formula of the sediment yield from watershed is deduced. With the calculation formula of water flow, a mathematical model with clear conception and definite process and complete structure of sediment yield from watershed is developed. The model is verified with measured data of some basins of Three Gorges Reservoir and the results are satisfactory.