标题：Courtyard-level sewer data-enhanced two-dimensional hydraulic model for urban flood hazard assessment in Kunming, China作者：Zhiqiang Xie;Qingyun Du;Zhongliang Cai;Huaixiang Liu;Sam Jamieson

来源出版物：Water Policy DOI：10.2166/wp.2014.189 在线出版时间：SEP 3 2014

摘要：This paper describes a study of urban flooding in downtown Kunming, China, simulating a major flood event that occurred in July 2008 using an improved two-dimensional (2D) hydraulic model enhanced with courtyard-level sewer data (CLSD). Although municipal authorities are not responsible for ‘private’ courtyard sewers, available records were specifically added to this model, enhancing its accuracy and usefulness. Geographic information system (GIS) flood maps, a mapping overlay approach and statistical method compared both predicted results and the recorded flood area. A statistical method also provided a measure of the correlation between the extent of the predicted flood areas and recorded flood areas (parameter ‘F’). Results of the improved 2D/CLSD model showed a correlation value for F of 51, 32.6% higher than the basic one-dimensional municipal-level sewer data (1D/MLSD) model; 26.2% higher than an interim version of the model that included a 2D ground surface (2D/MLSD). The 2D/CLSD model predicted flooding in ten of the twelve courtyards with observed flooding. This was a major improvement over the 1D/MLSD model (three out of twelve) and the 2D/MLSD model (five out of twelve). Thus a CLSD-enhanced 2D hydraulic model potentially improves accuracy in predicting, mapping and understanding flood risk in urban areas.

文献类型：Article

语种：English

作者关键词：2D hydraulic model; CLSD; Drainage system; Flood capacity; Urban flood

通讯作者地址：Qingyun Du; School of Resource and Environmental Science, Wuhan University, 129 Luoyu Road, Wuhan 430079, China

电子邮件地址：qydu@whu.edu.cn

地址：

[Zhiqiang Xie; Qingyun Du;Zhongliang Cai] School of Resource and Environmental Science, Wuhan University, 129 Luoyu Road, Wuhan 430079, China

[Zhiqiang Xie] Kunming Underground Pipeline Detection and Management Office, Kunming 650041, China

[Huaixiang Liu] Nanjing Hydraulic Research Institute, Nanjing 210029, China

[Sam Jamieson] Heriot-Watt University, Edinburgh EH14 4AS, UK

ISSN：1366-7017

全文链接：http://www.iwaponline.com/wp/up/wp2014189.htm