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为提升多沙水库的发电效益、选择合适的分期汛限水位,应用一维非均匀流不饱和输沙模型,结合某多沙水库现行调度规程,模拟了该水库在多种拟定分期汛限水位方案下水流、泥沙等因素的长期变化过程,计算了各方案总库容、有效库容淤损率及多年平均发电量等指标,并综合考虑提升水库发电量和保证水库防洪安全方面目标对各方案进行比选,确定了该水库的最佳分期汛限水位方案。该方案可在一定的泥沙淤积水平年内提升水库的发电效益,并通过预泄调洪方式以保障其防洪安全。
In order to improve the power generation benefit of Dousha reservoir, a suitable one-stage flood limited water level is selected. Based on the one-dimensional non-uniform flow unsaturated sediment transport model, combined with the current scheduling regulation of a Dousha reservoir, Under the long-term change process of water flow and sediment under the project, the total capacity of each program, the effective storage volume damage rate and average power generation for many years are calculated. The targets of improving the generating capacity of the reservoir and ensuring the flood control safety of the reservoir are comprehensively considered. Comparison and selection, to determine the optimal staging of the reservoir flood season water level program. The scheme can enhance the power generation benefit of reservoirs in a certain level of sedimentation and ensure the flood control safety by means of pre-release flood regulation.