Influence of Operating Water Level on Sediment Deposition in the Three Gorges Reservoir during High Flood Levels

ZHANG Cheng-xiao; MI Bo-yu; L&#xDC; Chao-nan; ZHAO Han-qing; GAO Yu; REN Shi

doi:10.11988/ckyyb.20230070

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Journal of Changjiang River Scientific Research Institute ›› 2024, Vol. 41 ›› Issue (6) : 10-17. DOI: 10.11988/ckyyb.20230070

River-Lake Protection and Regulation

Influence of Operating Water Level on Sediment Deposition in the Three Gorges Reservoir during High Flood Levels

ZHANG Cheng-xiao¹, MI Bo-yu¹, LÜ Chao-nan², ZHAO Han-qing¹, GAO Yu², REN Shi²

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Abstract

The sediment issue in the Three Gorges Reservoir (TGR) is directly linked to the long-term maintenance of reservoir capacity. In this study we focus on the effects of incoming volumes of and asynchrony between water and sediment as well as operating water levels on sediment peak transport and deposition discharge in the TGR during typical high flood levels using numerical models. The findings indicate that an increase in incoming flood peak hinders the reduction of sediment peak ratio at Fuling Station, leading to more sediment transportation in front of the dam. This results in a greater reduction of sediment peak in front of the dam as the operating water level rises. The variable backwater area is more susceptible to the asynchrony between water and sediment movement compared to the perennial backwater area. As incoming-sediment coefficient rises, the proportion of siltation increases with the rise of low water levels. The sediment delivery ratio is minimally impacted by the asynchrony between water and sediment entering the TGR. As flood and sediment peaks increase, the sediment delivery ratio rises and is more responsive to the attenuation caused by rising operating water levels. These findings provide preliminary insights into the effects of natural water and sediment asynchrony, as well as operating water levels, on sediment movement and deposition in the TGR. This information can serve as a basis for optimizing sediment operations in the TGR.

Key words

sediment deposition / high flood level period / sediment peak attenuation / operational water level / sediment peak transport / reservoir storage capacity / Three Gorges Reservoir (TGR)

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ZHANG Cheng-xiao, MI Bo-yu, LÜ Chao-nan, ZHAO Han-qing, GAO Yu, REN Shi. Influence of Operating Water Level on Sediment Deposition in the Three Gorges Reservoir during High Flood Levels[J]. Journal of Changjiang River Scientific Research Institute. 2024, 41(6): 10-17 https://doi.org/10.11988/ckyyb.20230070

References

[1] 胡春宏.我国多沙河流水库“蓄清排浑” 运用方式的发展与实践[J].水利学报,2016,47(3):283-291.(HU Chun-hong.Development and Practice of the Operation Mode of “Storing Clear Water and Discharging Muddy Flow” in Sediment-laden Rivers in China[J]. Journal of Hydraulic Engineering,2016,47(3):283-291.(in Chinese))
[2] 胡春宏, 王延贵. 三峡工程运行后泥沙问题与江湖关系变化[J]. 长江科学院院报, 2014, 31(5): 107-116. (HU Chun-hong, WANG Yan-gui. Sediment Problems and Relationship between River and Lakes since the Operation of Three Gorges Project[J]. Journal of Yangtze River Scientific Research Institute, 2014, 31(5): 107-116.(in Chinese))
[3] 王延贵, 胡春宏, 刘茜, 等. 长江上游水沙特性变化与人类活动的影响[J]. 泥沙研究, 2016(1): 1-8. (WANG Yan-gui, HU Chun-hong, LIU Xi, et al. Study on Variations of Runoff and Sediment Load in the Upper Yangtze River and Main Influence Factors[J]. Journal of Sediment Research, 2016(1): 1-8.(in Chinese))
[4] 任实, 刘亮. 三峡水库泥沙淤积及减淤措施探讨[J]. 泥沙研究, 2019, 44(6): 40-45. (REN Shi, LIU Liang. Sediment Deposition and Countermeasures in the Three Gorges Reservoir[J]. Journal of Sediment Research, 2019, 44(6): 40-45.(in Chinese))
[5] 董炳江, 乔伟, 许全喜. 三峡水库汛期沙峰排沙调度研究与初步实践[J]. 人民长江, 2014, 45(3): 7-11. (DONG Bing-jiang, QIAO Wei, XU Quan-xi. Study on Sediment Peak Regulation of Three Gorges Reservoir in Flood Season and Preliminary Practice[J]. Yangtze River, 2014, 45(3): 7-11.(in Chinese))
[6] 张为,李昕,任金秋,等.梯级水库蓄水对三峡水库洪峰沙峰异步特性的影响[J].水科学进展,2020,31(4):481-490.(ZHANG Wei,LI Xin,REN Jin-qiu,et al.Influence of the Impoundment of Cascade Reservoirs on the Asynchronies of Flood Peak and Sediment Peak in the Three Gorges Reservoir[J].Advances in Water Science,2020,31(4):481-490.(in Chinese))
[7] 张地继, 董炳江, 杨霞, 等. 三峡水库库区沙峰输移特性研究[J]. 人民长江, 2018, 49(2): 23-28, 68. (ZHANG Di-ji, DONG Bing-jiang, YANG Xia, et al. Research on Sediment Peak Movement Characteristics in Three Gorges Reservoir[J]. Yangtze River, 2018, 49(2): 23-28, 68.(in Chinese))
[8] 黄仁勇,舒彩文,谈广鸣.三峡水库汛期沙峰输移特性初步研究[J].应用基础与工程科学学报,2019,27(6):1202-1210.(HUANG Ren-yong,SHU Cai-wen,TAN Guang-ming. Preliminary Study on Transportation Characteristics of Sediment Concentration Peak of the Three Gorges Reservoir in Flood Season[J].Journal of Basic Science and Engineering,2019,27(6):1202-1210.(in Chinese))
[9] 王玉璇,金中武,陈鹏,等.三峡水库汛期水沙异步特性及沙峰输移时间研究[J].长江科学院院报,2022,39(9):24-29,37.(WANG Yu-xuan,JIN Zhong-wu,CHEN Peng,et al. Water-sediment Asynchrony and Transport Time of Sand Peak in Flood Season of Three Gorges Reservoir[J]. Journal of Yangtze River Scientific Research Institute,2022,39(9):24-29, 37.(in Chinese))
[10] 陈建, 李义天, 邓金运. 汛限水位优化调度对三峡水库泥沙淤积的影响[J]. 水力发电学报, 2012, 31(1): 183-188. (CHEN Jian, LI Yi-tian, DENG Jin-yun. Influence on Deposition in Three Gorges Reservoir Caused by Regulation Optimization of Flood-controlled Water Level[J]. Journal of Hydroelectric Engineering, 2012, 31(1): 183-188.(in Chinese))
[11] 杨春瑞, 邓金运, 齐永铭, 等. 中小洪水调度对三峡水库泥沙淤积的长期影响[J]. 水电能源科学, 2020, 38(6): 34-37. (YANG Chun-rui, DENG Jin-yun, QI Yong-ming, et al. Study on Long-term Impact of Small and Medium-sized Floods Regulation on Sedimentation of the Three Gorges Reservoir[J]. Water Resources and Power, 2020, 38(6): 34-37.(in Chinese))
[12] 金中武,任实,吴华莉,等.三峡水库淤积排沙及河型转化规律[J].长江科学院院报,2020,37(10):9-15,27.(JIN Zhong-wu, REN Shi, WU Hua-li, et al. Sedimentation and Sediment Delivery and River Pattern Conversion in the Three Gorges Reservoir[J]. Journal of Yangtze River Scientific Research Institute, 2020, 37(10): 9-15, 27.(in Chinese))
[13] 刘尚武, 王治力, 李丹勋. 长江上游水流挟沙力与含沙量比值的变化规律[J]. 水力发电学报, 2022, 41(11): 46-55. (LIU Shang-wu, WANG Zhi-li, LI Dan-xun. Comparison of Sediment Carrying Capacity to Sediment Concentration in Upper Reaches of Yangtze River[J]. Journal of Hydroelectric Engineering, 2022, 41(11): 46-55.(in Chinese))
[14] 王淑慧, 苏伯儒, 王云琦, 等. 近16年三峡库区径流输沙变化分析[J]. 中国水土保持科学(中英文), 2021, 19(1): 69-78. (WANG Shu-hui, SU Bo-ru, WANG Yun-qi, et al. Change Analysis of Runoff and Sediment in the Three Gorges Reservoir Region in Recent 16 Years[J]. Science of Soil and Water Conservation, 2021, 19(1): 69-78.(in Chinese))
[15] 朱玲玲, 葛华, 董炳江, 等. 三峡水库175 m蓄水后库尾河段减淤调度控制指标研究[J]. 地理学报, 2021, 76(1): 114-126. (ZHU Ling-ling, GE Hua, DONG Bing-jiang, et al. Control Index of Sediment Reduction Dispatching in Chongqing Reach after the Storage Level of TGR Reaching 175 m[J]. Acta Geographica Sinica, 2021, 76(1): 114-126.(in Chinese))
[16] 郭率,周曼,胡挺,等.近年来三峡水库水沙通量变化过程及原因分析[J].中国农村水利水电,2022(8):35-40,49.(GUO Shuai,ZHOU Man,HU Ting,et al. An Analysis of the Variation Process and Causes of Water and Sediment to the Three Gorges Reservoir in Recent Years[J]. China Rural Water and Hydropower,2022(8):35-40, 49.(in Chinese))
[17] 李文杰, 李娜, 杨胜发, 等. 基于挟沙力的三峡水库泥沙淤积形态分析[J]. 水科学进展, 2016, 27(5): 726-734. (LI Wen-jie, LI Na, YANG Sheng-fa, et al. Analysis of the Sedimentation in the Three Gorges Reservoir Based on the Sediment Carrying Capacity[J]. Advances in Water Science, 2016, 27(5): 726-734.(in Chinese))
[18] 姚金忠, 程海云, 王海, 等. 三峡水库175m试验性蓄水以来水文泥沙观测与研究[M]. 北京: 中国水利水电出版社, 2021. (YAO Jin-zhong, CHENG Hai-yun, WANG Hai, et al. Observation and Study on Hydrological and Sediment Since the 175 m Experimental Impoundment of Three Gorges Reservoir[M]. Beijing: China Water & Power Press, 2021. (in Chinese))
[19] 李娜,郭生练,王俊,等.长江中下游梅雨与三峡水库入库洪水遭遇规律分析[J].人民长江,2022,53(3):44-49.(LI Na, GUO Sheng-lian, WANG Jun, et al. Analysis of Encountering Law between Plum Rain in Middle and Lower Reaches of Changjiang River and Inflow Flood of Three Gorges Reservoir[J]. Yangtze River, 2022, 53(3): 44-49.(in Chinese))
[20] 赵汗青, 任实, 袁赛瑜, 等. 三峡库区洪峰的来水组成及传播特征[J]. 水科学进展, 2022, 33(6): 924-933.(ZHAO Han-qing, REN Shi, YUAN Sai-yu, et al. Inflow Composition and Transport of Three Gorges Reservoir Flood Peaks[J]. Advances in Water Science, 2022, 33(6): 924-933.(in Chinese))
[21] 李思璇, 杨成刚, 董炳江, 等. 长江上游高洪水期泥沙输移特性[J]. 长江科学院院报, 2021, 38(12): 6-11. (LI Si-xuan, YANG Cheng-gang, DONG Bing-jiang, et al. Sediment Transport Characteristics during High Floods in the Upper Reaches of the Yangtze River[J]. Journal of Yangtze River Scientific Research Institute, 2021, 38(12): 6-11.(in Chinese))
[22] ZHANG C, WANG L, ZHU H, et al. Integrated Hydrodynamic Model for Simulation of River-lake-sluice Interactions[J]. Applied Mathematical Modelling, 2020, 83: 90-106.
[23] 黄仁勇, 谈广鸣, 范北林. 长江上游梯级水库联合调度泥沙数学模型研究[J]. 水力发电学报, 2012, 31(6): 143-148. (HUANG Ren-yong, TAN Guang-ming, FAN Bei-lin. Mathematical Modeling of Sedimentation for Joint Operation of Cascade Reservoirs in the Upper Yangtze Reaches[J]. Journal of Hydroelectric Engineering, 2012, 31(6): 143-148.(in Chinese))
[24] 吴天蛟, 杨汉波, 李哲, 等. 基于MIKE11的三峡库区洪水演进模拟[J]. 水力发电学报, 2014, 33(2): 51-57. (WU Tian-jiao, YANG Han-bo, LI Zhe, et al. Modeling of Flood Routing for Three Gorges Reservoir Area Based on MIKE11[J]. Journal of Hydroelectric Engineering, 2014, 33(2): 51-57.(in Chinese))
[25] XU J, ZHANG C, WANG L, et al. Variation of Dominant Discharge along the Riverbed Based on Numerical and Deep-learning Models: A Case Study in the Middle Huaihe River, China[J]. Journal of Hydrology, 2022, 612: 128285.
[26] 黄仁勇,舒彩文,谈广鸣.三峡水库调度运用对出库水沙过程影响研究[J].应用基础与工程科学学报,2019,27(4):734-743.(HUANG Ren-yong, SHU Cai-wen, TAN Guang-ming. Influence of Operation and Application of the Three Gorges Reservoir on the Outbound Water and Sediment Process[J]. Journal of Basic Science and Engineering, 2019, 27(4): 734-743.(in Chinese))
[27] 李文杰, 马浩平, 杨胜发, 等. 三峡库区细颗粒泥沙淤积及一维数值模拟研究[J]. 应用基础与工程科学学报, 2021, 29(2): 251-260. (LI Wen-jie, MA Hao-ping, YANG Sheng-fa, et al. Sedimentation and one Dimensional Simulation of Fine Sediment in the Three Gorges Reservoir[J]. Journal of Basic Science and Engineering, 2021, 29(2): 251-260.(in Chinese))
[28] 彭杨, 张红武. 三峡库区非恒定一维水沙数值模拟[J].水动力学研究与进展(A辑),2006,21(3):285-292.(PENG Yang,ZHANG Hong-wu.1-D Numerical Simulation of Unsteady Flow and Sedimentation Transport at the Three Gorges Reservoir(TGR)[J].Journal of Hydrodynamics (Ser.A),2006,21(3):285-292.(in Chinese))
[29] 黄仁勇, 谈广鸣, 范北林. 三峡水库蓄水运用后汛期洪水排沙比初步研究[J]. 水力发电学报, 2013, 32(5): 129-133, 152. (HUANG Ren-yong, TAN Guang-ming, FAN Bei-lin. Sediment Delivery Ratio of Three Gorges Reservoir in Flood Events after Its Impoundment[J]. Journal of Hydroelectric Engineering, 2013, 32(5): 129-133, 152.(in Chinese))
[30] 胡春宏, 方春明. 三峡工程泥沙问题解决途径与运行效果研究[J]. 中国科学: 技术科学, 2017, 47(8): 832-844. (HU Chun-hong, FANG Chun-ming. Research on Sediment Problem Solutions for the Three Gorges Project and Its Operational Effects[J]. Scientia Sinica (Technologica), 2017, 47(8): 832-844.(in Chinese))
[31] 张帮稳, 吴保生, 章若茵. 三峡库区汛期洪峰和沙峰异步运动特性的三维数值模拟[J]. 水科学进展, 2021, 32(3): 408-417. (ZHANG Bang-wen, WU Bao-sheng, ZHANG Ruo-yin. Three-dimensional Numerical of the Asynchronous Movement Characteristics of Flood and Sediment Peaks in the Three Gorges Reservoir[J]. Advances in Water Science, 2021, 32(3): 408-417.(in Chinese))
[32] 刘洁, 沈颖, 杨树青. 长江上游不平衡水沙输运对三峡库区泥沙淤积影响[J]. 长江流域资源与环境, 2020, 29(6): 1333-1342. (LIU Jie, SHEN Ying, YANG Shu-qing. Influence of Non-balanced Water and Sediment Transport in the Upper Yangtze River on Sediment Siltation in the Three Gorges Reservoir Area[J]. Resources and Environment in the Yangtze Basin, 2020, 29(6): 1333-1342.(in Chinese))
[33] 三峡工程泥沙专家组. 三峡工程运行后泥沙冲淤与调控[M]. 北京: 中国水利水电出版社, 2020. (Expert Group on Sediment of the Three Gorges Project. Sediment Erosion and Siltation and Its Regulation after the Operation of the Three Gorges Project[M]. Beijing: China Water & Power Press, 2020. (in Chinese))