埃塞俄比亚东部铁路大中流域水文计算方法浅析

摘要

Taking the hydrological analysis of the large and medium-sized river basin along the section from Mieso to Dawanle of Ethiopian east railway bridges and culverts as an example,the paper introduces the main characteristics and a-nalysis methods of hydrological activity in this region.For rainfall characteristics,soils and land use in Africa,we adopt SCS hydrological model in hydrological calculation and analysis and it describes the working conditions and parameter val-ues,etc.,in application of the SCS method.The results show that SCS rainfall-runoff model takes into account the relation-ship between runoff and soil characteristics and land use.It is a simple approach and needs fewer parameters.It is a good hydrology calculation in Africa and provides a reference for rainfall-runoff calculation of similar regions.%以埃塞俄比亚东部铁路 Mieso 至 Dawanle 段桥涵水文分析为例，介绍该地区水文工作的特点和方法，应用SCS 水文模型，针对非洲地区的降雨特征、土壤和土地利用状况进行水文计算分析，阐述了 SCS 法的适用条件、参数取值等内容，结果表明：SCS 降雨－径流水文计算方法考虑了径流形成与土壤特性和土地利用的关系，简单易行，所需参数少，能够较好的适合于非洲地区，并可供类似区域的降雨—径流计算参考。