Risk analysis for earth dam overtopping |
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Authors: | Mo Chongxun Liu Fanggui Yu Mei Ma Rongyong Sun Guikai |
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Affiliation: | 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 |
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Abstract: | 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. |
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Keywords: | overtopping risk analysis earth dam flood wind wave risk standard |
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