对陕北“84.7”暴雨洪水的讨论

Discussion on the '84.7' rainstorm-flood in Northern Shaanxi

根据延河、清涧河暴雨洪水关系 ,讨论了水利水保工程对暴雨洪水的影响。认为在超渗产流地区洪水与雨强关系极大 ,而“84.7”暴雨因雨强不大 ,因而洪峰不大 ,并非完全是水利水保工程削峰作用所致。

On the basement of rainstorm-flood relation of Yanhe river and Qingjianhe river, the effects of water-soil conservation project on rainstorm-flood is discussed. The flood relates to rainfall-intensity in ultra-infiltration flow area. The flood-peak of `84.7' rainstorm is not large. The reason is that the rainfall-intensity is not large, not entirely the flood-peak reduction by water-soil conservation project.