Water Science and Engineering 2008, 1(2) 76-87  DOI:   10.3882/j.issn.1674-2370.2008.02.008   ISSN: 1674-2370 CN: 32-1785/TV

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overtopping risk analysis
earth dam
wind wave
risk standard
Mo Chongxun
Liu Fanggui
Yu Me
Ma Rongyong
Sun Guikai
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Risk analysis for earth dam overtopping

Mo Chongxun*1, Liu Fanggui1, Yu Mei2, Ma Rongyong1, Sun Guikai1

1. College of Civil and Architectural Engineering, Guangxi University, Nanning 530004, P. R. China;
2. Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, P. R. China


In this paper, a model of overtopping risk under the joint effects of floods and wind waves, which is based on risk analysis theory and takes into account the uncertainties of floods, wind waves, reservoir capacity and discharge capacity of the spillway, is proposed and applied to the Chengbihe Reservoir in Baise City in Guangxi Zhuang Autonomous Region. The simulated results indicate that the flood control limiting level can be raised by 0.40 m under the condition that the reservoir overtopping risk is controlled within a mean variance of 5×10-6. As a result, the reservoir storage will increase to 16 million m3 and electrical energy generation and other functions of the reservoir will also increase greatly.

Keywords overtopping risk analysis   earth dam   flood   wind wave   risk standard  
Received 2008-04-15 Revised 2008-05-30 Online:  
DOI: 10.3882/j.issn.1674-2370.2008.02.008
Corresponding Authors: Mo Chongxun*
About author:

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