首页|梨园—阿海混合式抽水蓄能电站库区泥沙淤积预测

梨园—阿海混合式抽水蓄能电站库区泥沙淤积预测

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水库泥沙淤积不仅会导致水库有效库容减小,影响水库的使用寿命和发电效益,还会影响水库的调节能力,增加水库的防洪压力.库区泥沙淤积预测有利于掌握水库运行期间的泥沙淤积趋势,便于制定合理的调度运行方式以达到防沙减沙的目的,延长电站使用寿命.采用一维恒定非均匀不平衡输沙数学模型预测了考虑上游梯级电站拦沙后,金沙江中游梨园、阿海水库在梨园—阿海混合式抽水蓄能电站建成后库区泥沙淤积趋势,结果表明:梨园、阿海水库泥沙主要淤积在库中—库尾河段,坝前泥沙淤积高程较低,库区泥沙淤积程度较轻;梨园-阿海混合式抽水蓄能电站运行100年后,梨园、阿海水库泥沙淤积总量分别约为1.21亿m3、1.94亿m3,调节库容淤损率分别为8.43%、14.4%.
Prediction of Sediment Deposition in the Reservoir Area of Liyuan-Ahai Hybrid Pumped Storage Hydropower Station
The sedimentation of reservoir will not only reduce the effective storage capacity of reservoir,affect the service life and power generation efficiency of reservoir,but also affect the regulation capacity of reservoir and increase the flood control pressure of reservoir.The prediction of sediment deposition in reservoir area is helpful to grasp the trend of sediment deposition during the operation of reservoir,to formulate reasonable operation mode to achieve the purpose of sediment control and reduction,and to extend the service life of hydropower station.A one-dimensional constant non-uniform and unbalanced sediment transport mathematical model is used to predict the sedimentation trend of Liyuan and Ahai reservoirs in the middle reaches of Jinsha River after the completion of Liyuan-Ahai hybrid pumped storage hydropower station considering the upstream cascade hydropower station.The results show that:The sediment of Liyuan and Ahai reservoirs is mainly deposited in the middle to the end of the reservoir,the sediment elevation in front of the dam is low,and the sediment deposition degree in the reservoir is light.After 100 years of operation of Liyuan-Ahai hybrid pumped storage hydropower station,the total amount of sediment deposition in Liyuan Reservoir and Ahai reservoir is about 121 million m3 and 194 million m3,and the loss rate of storage capacity was 8.43%and 14.4%,respectively.

sediment depositionLiyuan-Ahai hybrid pumped storage hydropower stationpredictionstorage capacity loss rate

刘勇、王超兴、唐孟

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中国电建集团昆明勘测设计研究院有限公司,云南省昆明市 650000

泥沙淤积 梨园-阿海混合式抽水蓄能电站 预测 库容淤损率

国家自然科学基金黄河自然科学基金黄河水科学研究联合基金项目中国电力建设股份有限公司"揭榜挂帅"核心技术攻关项目水电水利规划设计总院科技项目

U2243232DJ-HXGG-2022-01ZS-KJGH-20220009

2024

水电与抽水蓄能
国网电力科学研究院

水电与抽水蓄能

影响因子:0.247
ISSN:2096-093X
年,卷(期):2024.10(4)