首页|三峡水库对城陵矶防洪补偿控制水位研究Ⅱ——风险分析与运用方案

三峡水库对城陵矶防洪补偿控制水位研究Ⅱ——风险分析与运用方案

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  • 国家科技期刊平台
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乌东德、白鹤滩水库投运后,长江上游水库群联合防洪调度为进一步提高三峡水库对城陵矶防洪补偿控制水位创造了有利条件.为提高三峡水库对城陵矶防洪补偿控制水位,针对金沙江下游梯级防洪库容投入运用条件,基于三峡坝址不同典型年的不同频率设计洪水,开展了荆江防洪和库区回水风险分析,提出了金沙江下游梯级配合三峡水库的等比例分级拦蓄方式,在确保荆江及库区防洪安全的前提下,提出了三峡水库对城陵矶防洪补偿控制水位优化运用方案,给出了金下梯级预留防洪库容与三峡水库对荆江防洪库容的等效关系.研究结果表明:提出的等比例分级拦蓄方式综合了拦量和削峰两种模式,有效利用了金下梯级防洪库容,调度效果最好;提出的水位优化运用方案具备较好的防洪减灾效果,丰富完善了长江上游水库群联合防洪调度方案,可进一步减少中下游超额洪量.研究成果可为长江水库群实际洪水调度提供技术支撑和决策参考.
Controlled water level of Three Gorges Reservoir carrying out compensation dispatch to Chenglingji Area Ⅱ:risk analysis and operation scheme
The joint operation of reservoir groups in the upper reaches of Changjiang River has created favorable conditions for further raising the flood control compensation level of Three Gorges Reservoir(TGR)to Chenglingji Area after the construction and operation of Wudongde Reservoir and Baihetan Reservoir.To raise the controlled water level of Three Gorges Reservoir carry-ing out compensation dispatch to Chenglingji Area,aiming at the operation conditions of the flood control storage capacity of the four reservoirs in the lower Jinsha River,as well as the design floods of different frequencies in different typical years at the Three Gorges dam site,risk analysis on Jingjiang Reach and reservoir backwater are performed,so an equal proportional and graded stor-age mode for cascade reservoirs on lower Jinsha River assisting TGR is proposed.Moreover,under the premise that the flood con-trol risks of Jingjiang Reach and reservoir backwater are controllable,an optimal scheme for flood control compensation level with different flood control capacities of cascade reservoirs in the lower reaches of Jinsha River is present,and the equivalent relation-ship between the reserved flood control capacity is provided.The research results demonstrated that the proposed equal proportion graded storage mode integrates the two modes of storing quantity and peak shaving,effectively using the flood control storage ca-pacity of cascade reservoirs in the lower Jinsha River with the best effect.The proposed optimal scheme has better flood control and disaster reduction effects,which can further reduce the excess flood volume in the middle and lower reaches of the Changjiang River.The research results can provide technical support for the actual Changjiang River flood control and decision-making ref-erence.

flood control compensationcontrol levelrisk analysisJingjiang ReachChenglingji arealower reaches of Jinsha RiverThree Gorges Reservoir

邹强、胡挺、饶光辉、何小聪、肖扬帆

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长江勘测规划设计研究有限责任公司,湖北 武汉 430010

流域水安全保障湖北省重点实验室,湖北武汉 430010

中国长江三峡集团有限公司,湖北宜昌 443133

防洪补偿 控制水位 风险分析 荆江河段 城陵矶地区 金沙江下游 三峡水库

国家重点研发计划项目中国长江三峡集团有限公司科研项目国家自然科学基金长江勘测规划设计研究有限责任公司自主创新项目

2021YFC3200302079924052009079CX2019Z44

2024

10.16232/j.cnki.1001-4179.2024.02.001

人民长江
水利部长江水利委员会

人民长江

CSTPCD北大核心
影响因子：0.451
ISSN：1001-4179
年,卷(期)：2024.55(2)
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