人民长江Issue(12)：21-26,6.DOI:10.16232/j.cnki.1001-4179.2015.12.006
不同土壤含水量的动态临界雨量拟定方法研究
Study of Dynamic Critical Precipitation Drafted Method under different soil moisture content level
摘要
Abstract
Due to the lack of data and insufficient analysis of the critical precipitation, the pre-warning effect of mountain tor-rents is poor. Based on the rainfall-runoff relation, by considering the soil moisture and observed antecedent rainfall, the later rainfall ( critical rainfall) resulting in the peak discharge just to reach the safe discharge is calculated, and then the calculation functions for dynamic critical precipitation under different soil moisture content level are established using the fitted function rela-tion between antecedent rainfall and critical rainfall by least square method. Using this method, combining with 38 typical flood process in the experimental basin from 1964 to 2014, the calculation function are applied to validate the feasibility. The pre-warning of mountain torrents simulation is carried out and the qualification rate is 94. 7%, which indicates that the Dynamic Criti-cal Rainfall Drafting Method is technically feasible for pre-warning of mountain torrents.关键词
土壤含水量/动态临界雨量/降雨径流/山洪预警Key words
soil moisture content/dynamic critical precipitation/rainfall-runoff/mountain flood warning分类
天文与地球科学引用本文复制引用
陈瑜彬,杨文发,许银山..不同土壤含水量的动态临界雨量拟定方法研究[J].人民长江,2015,(12):21-26,6.基金项目
水利部公益性行业专项科研经费项目(201201063) （201201063）
