Analysis on urban pluvial floods and causes during rapid development in Beijing
Ye Chaofan1, Zhang Yichi2, Cheng Weiming2, Qin Jianxin1, Jiang Yan3
1. College of Resources and Environmental Science, Hunan Normal University, Changsha 410081;
2. State Key Laboratory of Resource and Environmental Information System, Institute of Geographic Science and Natural Resources Research, CAS, Beijing 100101;
3. China Institute of Water Resources and Hydropower Research, Beijing 100038
Abstract：The rampant urban development in Beijing is resulting in impermeable surface increasing and urban pluvial flooding. In turn it is impacting ecosystem functions as well as urban lives, causing social and economic losses. In this paper, the distribution characteristics of waterlogging from typical event of "2012.7.21" rainstorm are analyzed, the urban waterlogging within the 5th Loop Road of Beijing is discussed, and summarized the causes of frequent occurrence of urban waterlogging. The study results show that in the process of urbanization, the increase of urban impervious surface leads to rapid increase of storm runoff, which results in severe waterlogging in built-up area and low terrain interchange area. Based on successful experience on waterlogging management since 2012, the recommendations are proposed, including upgrading infrastructure and developing sponge city, to improve urban pluvial floods management in Beijing.
2018, Vol. 28 
