郁江西津水库以下段干流与支流及浔江洪水遭遇组合分析

Analysis of floods encounter and synthesis between main stream and tributaries of Yujiang River section downstream of Xijin Reservoir and Xujiang River

郁江西津水库以下至汇合口全长约220 km,区间集雨面积8 790 km^2,本河段洪水来源主要为郁江干流和区间主要支流,河口段的桂平市还受浔江洪水顶托影响。分析了郁江及浔江流域的暴雨洪水特征,论述了西津水库以下郁江干流洪水与支流、浔江洪水的遭遇及洪水组合情况。

The Yujiang River section from Xijin Reservoir downstream to the confluence with Xunjiang River has a total length of 220km approximately and water catchment area of 8790 km2. Flood in this river section mainly origi- nates from trunk stream and major tributaries, and is influenced by flood backwater from Xujiang River in Guiping City nearby the river confluence. Based on analysis of the rainstorm flood characteristics of Yujiang and Xunjiang river basins, the author discussed the floods encounter and synthesis between main stream and tributaries of Yujiang River section and Xujiang River.