LI Zhe,ZHOU Yi,WU Li-zhen,et al.Rainfall Importance Classification Based on Runoff Pollution[J].China Water & Wastewater,2021,37(9 9):110-115.
Rainfall Importance Classification Based on Runoff Pollution
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
9 9
Page:
110-115
Column:
Date of publication:
2021-05-01
- Keywords:
- runoff pollution; importance; fuzzy C-means clustering; long-term series of rainfall; rainfall event; dry weather days
- Abstract:
- According to the amount of runoff pollution, a classification standard based on the importance of rainfall was proposed, which could be used to monitor rainfall runoff pollution and reduce the dependence on multi-year detailed rainfall data in practical engineering application. Based on long-term series of rainfall data, the rainfall was classified according to the degree of rainfall runoff pollution, and the rainfall with large runoff pollution (important rainfall) was determined. According to different types of rainfall characteristic parameters (dry weather days and rainfall depth), fuzzy C-means clustering method was applied to classify rainfalls into three categories: important rainfall, general rainfall and unimportant rainfall. A rainfall importance classification method was proposed and applied to the WH river basin in Shenzhen. By drawing rainfall distribution maps with different importance, various rainfall distribution areas were relatively divided and a classification standard was established. However, rainfalls in fuzzy areas needed to be distinguished by combining other factors.
Last Update:
2021-05-01