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中国农学通报

中国农学通报 ›› 2005, Vol. 21 ›› Issue (7): 380-380.

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城市化对洪水的影响研究 ——以深圳市对深圳河设计洪水的影响为例

高照良,冯兴平,丛怀军   

  • 出版日期:2005-07-05 发布日期:2005-07-05

Study on the Effect of Urbanization on Floodwater ——Taking the Shen-zhen city as an example

Gao Zhaoliang, Feng Xingping, Cong Huaijun   

  • Online:2005-07-05 Published:2005-07-05

摘要： 城市化作为影响洪水形成的下垫面条件的因素之一对洪水形成影响较大，通过对城市化影响洪水作用机理的分析得出，城市化使城市集水区天然调蓄能力减弱，汇流速度明显加快，径流系数也明显增大，城市化所及地区的产汇流过程发生显著变化。另外还以深圳城市化对深圳河设计洪水的影响为例计算得出“城市化”将加大深圳河流域坡面汇流及河槽汇流的速度，缩短汇流时间，加大洪峰流量。对于百年一遇洪水，干流各控制点汇流历时缩减15.4%~21.7%，相应洪峰流量增加11.8%~19.0%。

Abstract: As one of land cover changing factors, urbanization effects greatly on the flooding water. From the mechanism analysis of urbanization action, it showed that urbanization changed notably the processing of produce and confluent water, so that decreased the ability of basin’s holding water, increased largely the confluent speed. The runoff coefficient distinctly grow up. This paper took the urbanization of Shenzhen City effecting the floodwater planning of Shenzhen River as an example, got the results that urbanization would increased the speed of over land and channel flow concentration, shorten time, increase the flood peak flux. As to the flood water encountered in 100 years, the concentration time in the controlling points of the stemflow would be curtailed by 15.4%~21.7%, correspondingly the flood peak flux increase by 11.8%~19.0%.