Assessment of Sediment Impact on the Risk of River Diversion during Dam Construction: A Simulation-Based Project Study on the Jing River, China
Assessment of Sediment Impact on the Risk of River Diversion during Dam Construction: A Simulation-Based Project Study on the Jing River, China
复制标题
大坝建设期间泥沙对河流改道风险的影响评估：基于中国泾河的模拟项目研究
DOI：
10.3390/w10020217
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发表时间：
2018-02
期刊：
影响因子：
--
通讯作者：
Xiong Jianqing
中科院分区：
文献类型：
--
作者：
Song Zida;Liu Quan;Hu Zhigen;Li Huian;Xiong Jianqing
Dams are vital for water resource utilization, and river diversion is key for dam construction safety. As sandy river basins are important exploitation areas that have special diversion features, the impact of sediment on the risk of river diversion during dam construction should be assessed. Diversion uncertainty is the origin of diversion risk, and sediment uncertainty changes the storage and discharge patterns of the diversion system. Two Gumbel–Hougaard (GH) copula functions are adopted to couple the random variables of flood and sediment, so that the sediment impacts on diversion storage and discharge can be obtained by the sampling of flood peaks. Based on variable coupling and sediment amendment, a method of Monte Carlo simulation (MCS) with a water balance calculation can quantitatively assess the risk of sandy river diversion, by evaluating the probability of upstream cofferdam overtopping. By introducing one diversion project on the Jing River in China with a clear water contrast, the risk values of dam construction diversion with or without sediment impacts can be obtained. Results show that the MCS method is feasible for diversion risk assessment; sediment has a negative impact on the risk of river diversion during dam construction, and this degradation effect is more evident for high-assurance diversion schemes.
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影响因子：
2.7
作者：
Srikanta Mishra
通讯作者：
Srikanta Mishra
影响因子：
3.4
作者：
A. Radice;L. Longoni;M. Papini;D. Brambilla;V. Ivanov
通讯作者：
A. Radice;L. Longoni;M. Papini;D. Brambilla;V. Ivanov
影响因子：
2.4
作者：
Hu Zhi-gen
通讯作者：
Hu Zhi-gen
影响因子：
2.3
作者：
Gabriela Gic-Grusza;A. Dudkowska
通讯作者：
Gabriela Gic-Grusza;A. Dudkowska
DOI：
--
发表时间：
1948-06
期刊：
--
影响因子：
--
作者：
E. Meyer-Peter;R. Müller
通讯作者：
E. Meyer-Peter;R. Müller