遇龙河流域水文特性分析

Hydrological characteristics analysis of Yulong River Basin

根据遇龙河流域多年水文观测数据,结合典型场次洪水,分析了流域降雨径流关系以及暴雨洪水在流域内的演进规律。结果表明:遇龙河流域5~9月蒸发量占全年总蒸发量的58%;降水量与径流量年内分布极不均匀,3~9月降雨量占全年的80.8%;4~7月份径流量占全年径流量的66.1%;降雨量和径流深具有较好的线性关系;遇龙河流域具有汇流快,洪水暴涨暴落的特点。

Based on years of hydrological observation data of Yulong River Basin, combined with typical floods, the author analyzed the rainfall-runoff relation of Yulong River Basin and the development rule of rainstorm flood in the basin. The results of analysis demonstrate the evaporation from May to September takes up 58% of yearly total evaporation;the annual distribution of rainfall and runoff is extremely uneven;the precipitation from March to September accounts for 80.8% of the annual total;the runoff from April to July takes up 66.1% of the whole year;there is a good linear relationship between rainfall and runoff depth;Yulong River Basin has the characteristics of rapid confluence and sudden rise or fall of flood.