洪水递减指数及其在洪水过程设计中的应用研究  

Study on Flood Decline Index and Its Application in Flood Hydrograph Design

作　　者：张金良 盖永岗 李超群 沈洁 ZHANG Jinliang;GE Yonggang;LI Chaoqun;SHEN Jie(Yellow River Engineering Consulting Co.Ltd.,Zhengzhou 450003,China)

机构地区：[1]黄河勘测规划设计研究院有限公司,河南郑州450003

出　　处：《水文》2022年第3期8-13,共6页Journal of China Hydrology

基　　金：国家重点研发计划资助项目(2017YFC0404602)。

摘　　要：基于暴雨公式的思想,定义了指数型时段平均洪水流量公式,经公式推导提出洪水递减指数的概念,研究总结了洪水递减指数的分析计算方法,可将其移用至无实测流量资料小流域设计洪水过程线的推求,并选取窟野河上游的乌兰木伦河流域进行了应用示例。结果表明该方法合理可行,为无资料地区设计洪水过程线的推求提供了新思路。Based on the idea of rainstorm foumula, the exponential-type formula of average flood flow was defined. The conception of flood decline index was put forward by formula derivation. The analysis and calculation method of flood decline index was studied and summarized, which could be applied to the calculation of flood hydrograph design in small watershed without measured flow data. A application example was done to Wulanmulun basin witch is at the upper stream of Kuye river. The results show that the method is reasonable and feasible, witch could provide a new idea for the calculation of flood hydrograph design in ungauged small watershed.

关 键 词：时段平均洪水流量公式 洪水递减指数 无资料小流域 设计洪水过程线 

分 类 号：P933[天文地球—自然地理学]