百年水文话洪灾

Talking about the flood disaster from a hundred years' hydrology

在梧州水文站百年完整的水文资料系列中 ,出现 2 3 0 0m以上的灾害性洪水有 2 0次 ,而 1992年以来连续发生 2 3 0 0m以上的灾害性洪水有 4次 ,造成巨大的经济损失和社会影响。为此应用梧州水文站百年长系列的水文资料 ,通过对上游来水来沙、断面变化、河床冲淤、防洪堤对洪水的影响、水位流量关系的变化、灾害性洪水一般规律的分析 ,得出梧州洪水有其周期演变的自然规律的结论。

Happened 20 times disaster flood above the flood level 23.00 m in the 100 years' hydrology data series of the Wuzhou hydrology station. Using those hydrologic data, the author analyzed the upper stream discharge and silt, section change, riverbed scour and fill, flood embankment influence to flood, the change of water level and discharge relation and general regularity of disaster flood, and made conclusion that the Wuzhou flood have its periodic variation regularity.