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【目的】探索雅砻江大河湾减水河段最小下泄流量调度保障方式，维护减水河段水生态健康。【方法】采用M-K法开展径流序列变异诊断，利用Copula函数构建雅砻江泸宁断面以上干支流来水联合概率分布模型，分析干支流径流丰枯遭遇特性，提出径流非一致性条件下的泸宁断面最小下泄流量保障策略；构建梯级水库水量联合调度模型，分析干支流遭遇平水、特枯水情境下的泸宁断面最小下泄流量保障方案和梯级电站调度方式。【结果】结果显示：锦屏二级坝址径流在1989年前后发生突变，突变前后干支流来水丰-枯、枯-丰遭遇概率均较低；为保障泸宁断面最小下泄流量，锦屏梯级需进行补水调度，干支流来水正常、遭遇枯水情境下，锦屏二级闸址除下泄生态基流外，需分别额外补水0～18.2 m3/s、11～48 m3/s;日内锦屏梯级无负荷运行中，利用梯级上下游水位衔接特性，挖掘锦屏二级调节能力，开展干支流联合调度，保障泸宁断面最小下泄流量目标。【结论】M-K方法可有效识别锦屏二级坝址径流的突变点；基于Copula函数的联合概率分布模型能够精确描述干支流径流之间的相依关系；不同情境下的最小下泄流量保障方案和梯级电站调度方式可有效保障雅砻江大河湾减水河段的最小下泄流量，维护水生态健康。
Abstract：[Objective]To explore scheduling strategies for ensuring minimum discharge flow in flow-reduced reaches of the Great Bend of the Yalong River, thereby safeguarding aquatic ecosystem health.[Methods]The Mann-Kendall(M-K) test was used to detect non-stationarity in runoff series. A joint probability distribution model was established for mainstream and tributary inflows of the Luning cross-section of the Yalong River using the Copula function to analyze the wet-dry encounter characteristics of mainstream and tributary runoff. Subsequently, a strategy for ensuring minimum discharge flow at the Luning cross-section under inconsistent runoff conditions was proposed. A joint scheduling model for cascade reservoirs was established to analyze schemes for ensuring minimum discharge flow at the Luning cross-section and scheduling strategies for cascade hydropower stations under normal and extremely dry scenarios in the mainstream and tributaries.[Results]The result showed that an abrupt change in runoff occurred at the Jinping-II dam site around 1989. Both pre-and post-change periods exhibited low probabilities of wet-dry or dry-wet encounters in mainstream and tributary inflows. Compensation water releases from the Jinping cascade were necessary to maintain minimum discharge flow at the Luning cross-section. Under normal and dry scenarios of mainstream and tributary inflows, Jinping-II gate site required additional compensation water releases of 0 to 18.2 m3/s and 11 to 48 m3/s, respectively, beyond the ecological base flow. During intraday no-load operation of the Jinping cascade, the hydraulic connectivity between upstream and downstream reservoirs was leveraged to enhance the regulation capability of Jinping II. Joint scheduling of mainstream and tributaries was implemented to achieve the goal of minimum discharge flow at the Luning cross-section.[Conclusion]The M-K method effectively identifies abrupt change points in runoff at the Jinping-II dam site. The joint probability distribution model based on Copula function accurately describes the dependency between mainstream and tributary runoff. The proposed scheme for ensuring minimum discharge flow and scheduling schemes for cascade hydropower stations under different scenarios can effectively ensure the minimum discharge flow in flow-reduced reaches of the Great Bend of the Yalong River, thereby preserving aquatic ecosystem health.
[1] YAN Q,BI Y,DENG Y,et al.Impacts of the Three Gorges Dam on microbial structure and potential function[J].Scientific Reports,2015,5:8605.
[2] 王沛芳，王超，侯俊，等.梯级水电开发中生态保护分析与生态水头理念及确定原则[J].水利水电科技进展，2016,36(5):1-7.WANG P F,WANG C,HOU J,et al.Ecological protection analysis of cascade hydropower development and concept and principle for definition of ecological water head[J].Advances in Science and Technology of Water Resources,2016,36(5):1-7.
[3] CHENG F,LI W,CASTELLO L,et al.Potential effects of dam cascade on fish:lessons from the Yangtze River[J].Reviews in Fish Biology and Fisheries,2015,25(3):569-585.
[4] 韩仕清.水利工程下游减水河段生态修复效果研究[J].水利信息化，2018(2):21-25.HAN S Q.Study on ecological restoration effect of water reducing reach in lower water conservancy project[J].Water Resources Informatization,2018(2):21-25.
[5] 柴朝晖，姚仕明.河流生态研究热点与进展[J].人民长江，2021,52(4):68-74.CHAI Z H,YAO S M.Several hotspots and progress of river ecology research[J].Yangtze River,2021,52(4):68-74.
[6] 王琨，周波，郭卫，等.目标生态需求下的梯级水库生态衔接水位指标构建及运用方式初探[J].中国农村水利水电，2023(6):115-119,127.WANG K,ZHOU B,GUO W,et al.Preliminary research on the construction and application of ecological connected water level index of cascade reservoirs under the target ecological demand[J].China Rural Water and Hydropower,2023(6):115-119,127.
[7] WANG Q,WANG S,HU Q,et al.Calculation of instream ecological water requirements under runoff variation conditions:Taking Xitiaoxi River in Taihu Lake Basin as an example[J].Journal of Geographical Sciences,2021,31(8):1140-1158.
[8] 蒋云钟，蔡思宇，王超.水网格局下流域生态流量保障调度研究：以永定河流域为例[J].中国水利，2024(18):61-67.JIANG Y Z,CAI S Y,WANG C.Studies on safeguarding ecological flow regulation for river basins under the framework of water networks:Taking the Yongding River Basin as an example[J].China Water Resources,2024(18):61-67.
[9] LI R,ZHAO J,LIU J,et al.Ecological operation of reservoir based on habitat protection and power generation opitimization [J].Journal of Hydrology,2020,588:125089.
[10] MA Q,LI R,FENG J,et al.Ecological regulation of cascade hydropower stations to reduce the risk of supersaturated total dissolved gas to fish[J].Journal of Hydro-Environment Research,2019,27:102-115.
[11] LI Y,LIN J,LIU Y,et al.Refined operation of cascade reservoirs considering fish ecological demand[J].Journal of Hydrology,2022,607:127559.
[12] YAN M,FANG G H,DAI L H,et al.Optimizing reservoir operation considering downstream ecological demands of water quantity and fluctuation based on IHA parameters[J].Journal of Hydrology,2021,600:126647.
[13] 黄蕊.梯级水电站最小下泄生态流量计算与评估[J].水利科技与经济，2022,28(5):120-123.HUANG R.Calculation and evaluation of minimum ecological discharge of cascade hydropower stations[J].Water Conservancy Science and Technology and Economy,2022,28(5):120-123.
[14] 徐长江，熊明，杜涛，等.面向水资源及水生态的并联水库联合调控研究[J].人民长江，2023,54(6):73-79.XU C J,XIONG M,DU T,et al.Study on joint operation of parallel reservoirs considering both water resources and water ecology[J].Yangtze River,2023,54(6):73-79.
[15] 李国英.为以中国式现代化全面推进强国建设、民族复兴伟业提供有力的水安全保障：在2024年全国水利工作会议上的讲话[J].水利发展研究，2024,24(1):1-10.LI G Y.Improved water security for China’s efforts to build itself into a stronger country and rejuvenate the Chinese nation on all fronts by pursuing Chinese modernization:Speech at the 2024 National Water Conservancy Work Conference[J].Water Resources Development Research,2024,24(1):1-10.
[16] 李国英.深入贯彻落实党的二十大精神扎实推动新阶段水利高质量发展：在2023年全国水利工作会议上的讲话[J].水利发展研究，2023,23(1):1-11.LI G Y.Thoroughly implement the spirit of the 20th National Congress of the Communist Party of China and solidly promote the high-quality development of water conservancy in the new stage:Speech at the National Water Conservancy Work Conference in 2023[J].Water Resources Development Research,2023,23(1):1-11.
[17] 吴丰昌.我国水体污染控制与治理成效、科技支撑与展望[J].水利发展研究，2023,23(12):1-8.WU F C.Effectiveness,scientific and technological support,and prospects for water pollution control and management in China[J].Water Resources Development Research,2023,23(12):1-8.
[18] 樊皓，闫峰陵.基于生态水力学法的金沙电站最小下泄流量计算[J].水文，2016,36(3):40-43,96.FAN H,YAN F L.Calculation of minimum discharge based on eco-hydraulics method[J].Journal of China Hydrology,2016,36(3):40-43.
[19] 陈青，杨智.改进逐月频率法在前坪水库最小下泄流量上的应用[J].治淮，2016(12):21-22.CHEN Q,YANG Z.Application of improved monthly frequency method in minimum discharge of qianping reservoir[J].Harnessing the Huaihe River,2016(12):21-22.
[20] 邓伟铸，廉浩，刘斌.大型水利枢纽工程最小下泄流量的确定：以贵州夹岩水利枢纽为例[J].人民珠江，2016,37(5):68-71.DENG W Z,LIAN H,LIU B.Determination of minimum discharge volume for large hydro project:A case study of jiayan in Guizhou[J].Pearl River,2016,37(5):68-71.
[21] 刘勇，张毅.满足通航标准条件下电站最小下泄流量计算与分析[J].水运工程，2015(1):134-138.LIU Y,ZHANG Y.Calculation and analysis of the minimum discharge about hydropower station under condition of satisfying navigation standard[J].Port & Waterway Engineering,2015(1):134-138.
[22] 范英琦，郑航，刘悦忆，等.东江流域下游水文情势的改变度研究[J].水利水电技术(中英文),2023,54(7):77-87.FAN Yingqi,ZHENG Hang,LIU Yueyi,et al.Study on hydrological regime alteration of lower reaches of Dongjiang River Basin[J].Water Resources and Hydropower Engineering,2023,54(7):77-87.
[23] 王建华，刘春，胡鹏.金沙江中游梯级水库联合调度下的生态下泄流量控制研究[J].水力发电学报，2020,39(3):105-111.WANG Jianhua,LIU Chun,HU Peng.Study on ecological discharge control under joint operation of cascade reservoirs in the middle reaches of the Jinsha River[J].Journal of Hydroelectric Engineering,2020,39(3):105-111.
[24] 刘杰，郎建，龙灵滋.雅砻江锦屏河段水电工程引发的水生生态难题及关键措施体系建设[J].水电站设计，2023,39(4):78-81.LIU J,LANG J,LONG L Z.Study on aquatic ecosystem problem and establishment of key measures system in Jinping hydropower project reach of Yalongjiang River[J].Design of Hydroelectric Power Station,2023,39(4):78-81.
[25] PENG Y,SHI Y,YAN H,et al.Coincidence risk analysis of floods using multivariate copulas:case study of Jinsha River and Min River,China[J].Journal of Hydrologic Engineering,2019,24(2):05018030.
[26] RAZMKHAH H,FARAROUIE A,RAVARI A R.Multivariate flood frequency analysis using bivariate copula functions[J].Water Resources Management,2022,36(2):729-743.
[27] 刘章君，郭生练，许新发，等.Copula函数在水文水资源中的研究进展与述评[J].水科学进展，2021,32(1):148-159.LIU Z J,GUO S L,XU X F,et al.Application of Copula functions in hydrology and water resources:A state-of- the- art review[J].Advances in Water Science,2021,32(1):148-159.
[28] SCHWEIZER B.Introduction to copulas[J].Journal of Hydrologic Engineering,2007,12(4):346.
[29] 吴宇彤，钟平安，万新宇，等.基于Copula函数的韩-榕-练三江径流丰枯遭遇分析[J].水力发电，2021,47(3):10-15,125.WU Y T,ZHONG P A,WAN X Y,et al.Study on the wetness-dryness encountering of inflow of Hanjiang-Rongjiang-Lianjiang Rivers based on copula functions[J].Water Power,2021,47(3):10-15,125.
[30] 石卫，雷静，李书飞，等.南水北调中线水源区与海河受水区丰枯遭遇研究[J].人民长江，2019,50(6):82-87.SHI W,LEI J,LI S F,et al.Occurrence probability of rich-scarce precipitation between water source area and Haihe River water receiving areas in middle route of Souh-to-North Water Diversion Project[J].Yangtze River,2019,50(6):82-87.
[31] 孙治才，阿长松，孙岩，等.基于Copula函数的金沙江流域云龙与松华坝水库入库径流丰枯遭遇分析[J].中国农村水利水电，2024(7):10-18.SUN Z C,A Z S,SUN Y,et al.Analysis of wet and dry encounter of inflow runoff of Yunlong and songhuaba reservoirs in Jinsha River Basin based on copula function[J].China Rural Water and Hydropower,2024(7):10-18.
[32] DE MICHELE C,SALVADORI G.A Generalized Pareto intensity-duration model of storm rainfall exploiting 2-Copulas[J].Journal of Geophysical Research:Atmospheres,2003,108(D2):4067.
[33] 蔺文慧，宋松柏.基于混合Copula函数的洪水联合概率计算方法[J].水力发电学报，2021,40(12):40-51.LIN W H,SONG S B.Calculation method of joint probability for flood based on mixed Copula function[J].Journal of Hydroelectric Engineering,2021,40(12):40-51.
[34] HUANG W,DONG S.Joint distribution of significant wave height and zero-up-crossing wave period using mixture Copula method[J].Ocean Engineering,2021,219:108305.
[35] KASA S R,BHATTACHARYA S,RAJAN V.Gaussian mixture copulas for high-dimensional clustering and dependency-based subtyping[J].Bioinformatics,2020,36(2):621-628.
[36] 杨丹阳，黄亚滨，邬述飞.基于动态规划法的水库优化调度研究[J].水利科技与经济，2024,30(4):14-17.YANG D Y,HUANG Y B,WU S F.Study on reservoir optimal operation based on dynamic programming method[J].Water Conservancy Science and Technology and Economy,2024,30(4):14-17.
[37] MA D,LUO W,YANG G,et al.A study on a river health assessment method based on ecological flow[J].Ecological Modelling,2019,401:144-154.
基本信息:
DOI：10.13928/j.cnki.wrahe.2025.06.006
中图分类号:TV213.4;X143
引用信息:
[1]段瞳,马彪,王天宇.基于生态安全的雅砻江减水河段最小下泄流量保障调度研究[J].水利水电技术(中英文),2025,56(06):64-76.DOI:10.13928/j.cnki.wrahe.2025.06.006.
基金信息:
国家重点研发计划课题(2021YFC3200303); 长江勘测规划设计研究有限责任公司自主创新项目(CX2023S034); 雅砻江流域水电开发有限公司科研试验项目(000645-22ZB0528/01)
2025-04-29
2025-04-29
2025-04-29