SU Ding-jiang,PU Gui-bing,LIU Jie,et al.Discussion on the Relationship between Volume Capture Ratio of Annual Rainfall and Volumetric Runoff Coefficient in Sponge Cities[J].China Water & Wastewater,2021,37(6 6):38-42.
Discussion on the Relationship between Volume Capture Ratio of Annual Rainfall and Volumetric Runoff Coefficient in Sponge Cities
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
6 6
Page:
38-42
Column:
Date of publication:
2021-03-17
- Keywords:
- volume capture ratio of annual rainfall; volumetric runoff coefficient; rainwater runoff control indicator
- Abstract:
- According to the application mode of the volume capture ratio of annual rainfall, the irrationality of using “1-volumetric runoff coefficient” as volume capture ratio of annual rainfall is analyzed. Based on the definition of volume capture ratio of annual rainfall and volumetric runoff coefficient, the internal relationship between volumetric runoff coefficient and volume capture ratio of annual rainfall is derived. It is suggested that the runoff pollution control indicator should adopt volume capture ratio of annual rainfall, and the runoff total volume control should adopt the volumetric runoff coefficient. The result showed that for the mountainous city with large natural volumetric runoff coefficient just like Chongqing, runoff pollution control is the decisive factor for the value of the volume capture ratio of annual rainfall.
Last Update:
2021-03-17