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特殊的气候条件、地理位置和地形特征,使得永城市极易造成春旱夏涝交替频繁发生,在多雨年份,汛期雨量集中极易造成灾害。经过多年治理,市区河道和城镇防洪体系虽取得重大进展,但由于河道排水能力偏低,每遇洪水宣泄不及,又没有分洪区,只能从河槽漫溢,形成内涝。文章分析了新形势下永城市城市防洪的防洪形势及现状,针对性提出了对策措施。
Special climatic conditions, geographical location and topographical features make it extremely easy for Yongcheng City to cause frequent alternations of spring drought and summer floods. In rainy years, heavy rainfall in flood season can easily cause disasters. After years of governance, significant progress has been made in the urban river systems and urban flood control systems. However, due to the low drainage capacity of the river channels, flood diversions occur each time there is no flood discharge and no flood diversion areas can form. The paper analyzes the flood control situation and current situation of urban flood control in Yongcheng under the new situation and puts forward countermeasures.