邕江大堤对南宁河段洪水影响初探

Elementary probing into the influence of theYongjiang big embankment to the flood of Nanning river reach

以邕江南宁河段建筑防洪大堤前后的实测水文资料、调查洪水资料,从历次洪水沿河水面线、水位～流量关系、水力学原理等几个方面进行对比分析,探讨邕江防洪大堤对郁江南宁河段洪水的影响情况,提出对郁江南宁河段超标洪水的分析预报、超标洪水分析计算应注意的问题,在制订防御超标洪水的预案时,要详细了解漫滩区的作用。

Based on the measured hydraulic materials and the investigated flood materials of the Yongjiang Nanning river reach, the author compared and analyzed the flood water surface profile, water level_flow relation and hydraulics principle, that existed before and after the big embankment was constructed. He probed into the influence of the big embankment to the flood of Nanning river reach, and expounded the questions due to attend in Nanning flood analysis and forecast. The action of flood plain area should be understood in detail for making ultra standard flood preventive scheme.