摘要
本文在原有研究成果基础上,产流方面改进了土壤剖面水分分布的摸拟技术,精度有所提高;汇流方面提出“非线性渠道”概念,用四点带权中心格式的水力学方法,成果满意;并对模型各参数作了分析.
Based on the previous studies on the storm flom modelling for arid and semi arid catchment,the soil moisture profile associated with the runoff generating process in the designed model is simulated by a modified algorithm, Thus the model efficiency is improved significantly.In addition the non- linear channel concept is also proposed and used to simulate the runoff cone- entration process.This concept evolves a weighted flnite-difference hydraulic routine method,and its effect on increasing the model efficiency is quite obvious.
基金
水电部水利水电科学基金
关键词
水文模型
暴雨
洪水
infiltration
soil water storage
field capacity
