Similarity-Based Optimal Operation of Water and Sediment in a Sediment-Laden Reservoir |
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Authors: | Xin Yu Wan Guang Qian Wang Peng Yi Wei Min Bao |
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Affiliation: | 1.State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing,China;2.Department of Earth Science (Air, Water and Landscape Sciences),Uppsala University,Uppsala,Sweden;3.State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering,Hohai University,Nanjing,China |
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Abstract: | Reservoir sedimentation is a severe problem because it leads to the loss of reservoir storage capacity. Therefore, the sustainable
management of water and sediment constitutes a critical measure in reservoir operation. In this research, a model of similarity-based
operation method of water and sediment which can improve the efficiency of reservoir operation strategies is presented. Two
parts comprise this method: a similarity-based forecasting model for the sediment process at the dam, and a new operation
mode of water and sediment based on the sediment process at the dam. The similarity-based forecasting model is built on the
total flow model of water and sediment, which requires less data. Using the similarity among flood cases, the parameters of
the model are calibrated by group, and are dynamically selected, an approach which enforces the suitability of parameters
and improves the forecasting accuracy. In terms of the sediment process at the dam, the proposed optimal operation model of
water and sediment improves the sediment-venting efficiency and saves the water resource. |
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