浅谈城市化对暴雨径流的影响
The Influence of Urbanization on Storm Runoff

随着经济社会的发展，城市化进程加快，城市用地紧张导致部分城市向低洼地区发展，甚至侵占河道，填埋沟塘，使得城市滞水空间缩小，降雨径流系数增大，汇流时间加快，增加了城市洪水风险。城市化改变了城市水文循环特性，从而使得城市雨洪特性改变，易引起短历时暴雨积水形成内涝直接影响了城市居民的生活并造成很大的经济损失，甚至人员伤亡。城市是政治、经济、文化中心，一旦遭受洪灾，将造成巨大的政治影响和经济损失，可见分析城市暴雨洪灾原因、提出相应对策显得十分重要。本文主要探讨城市化内涝原因及对暴雨径流的影响，并探讨应对措施。
With the development of economy and society, the process of urbanization is speeding up, and the shortage of urban land leads to the development of some cities to low-lying areas, and even en-croaches on rivers, buries ditches and ponds, reduces the urban stagnant water space, increases the rainfall runoff coefficient, speeds up the confluence time, and increases the urban flood risk. Urbanization has changed the characteristics of urban hydrological cycle, which changes the characteristics of urban rainfall and flood. It is easy to cause short-term rainstorm and waterlogging, which directly affects the life of urban residents and causes great economic losses, even casualties. City is the political, economic and cultural center; once suffered from floods, it will cause great political influence and economic losses, so it’s necessary to analyze urban storm flood reason and put forward the corresponding countermeasures. This paper mainly discusses the urban waterlogging reason and influence on storm runoff, and discusses the countermeasures.