周思佳,秦鑫,薛文豪,脱友才,熊定松,普源

• 1:四川大学水力学与山区河流开发保护国家重点实验室
• 2:华能澜沧江水电股份有限公司
• 3:中国电建集团西北勘测设计研究院有限公司

摘要(Abstract)：

【目的】大型水库下泄低温水影响及相应的减缓措施效果受到水库运行、取水方式等因素的影响，各因素之间彼此联系、相互作用。明晰水库运行方式对下泄水温的影响及其对叠梁门分层取水改善效果，可为大型水库的叠梁门分层取水效果评估及优化调度提供参考。【方法】以糯扎渡水电站为研究对象，建立糯扎渡立面二维水温数学模型，探讨水库运行方式对下泄水温及叠梁门分层取水效果的影响。【结果】结果显示：(1)水库修建后下泄水体存在明显的冬季高温水、夏季低温水现象，单独运行时，10月—次年2月水温较天然水温平均偏高2.0℃,4—6月偏低2.9℃。(2)与单独运行相比，糯扎渡水电站在梯级联合运行下的下泄水体升温效应更强，10月—次年2月水温平均升高2.5℃,3—8月水温平均升高1.4℃。(3)使用叠梁门后，4—8月下泄水温较单层取水时平均提高1.9℃,水温达到18℃的时间平均提前78 d。【结论】结果表明：澜沧江下游梯级联合运行对高温水产生叠加影响，对低温水表现出削弱影响；叠梁门抬高了取水流动层位置，对下泄水温有较好的改善作用，其改善效果与淹没水深、运行时段有明显的关系。

关键词(KeyWords)： 下泄低温水;分层取水;水库运行;淹没水深;累积影响

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发项目(2022YFC3202500);; 华能集团总部科技项目(HNKJ16-H13)

作者(Author): 周思佳,秦鑫,薛文豪,脱友才,熊定松,普源

DOI: 10.13928/j.cnki.wrahe.2023.09.015

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