向家坝水电站下游水温变化分析  

Analysis of Water Temperature Variation in the Downstream of Xiangjiaba Hydropower Station

作　　者：黄膺翰 严忠銮 卢晶莹 王小明 徐火清 常訸 匡亮 HUANG Yinghan;YAN Zhongluan;LU Jingying;WANG Xiaoming;XU Huoqing;CHANG He;KUANG Liang(PowerChina Zhongnan Engineering Corporation Limited,Changsha 410014,Hunan,China;China Three Gorges Construction Engineering Corporation,Chengdu 610065,Sichuan,China;China Renewable Energy Engineering Institute,Beijing 100120,China)

机构地区：[1]中国电建集团中南勘测设计研究院有限公司,湖南长沙410014 [2]中国三峡建工(集团)有限公司,四川成都610065 [3]水电水利规划设计总院,北京100120

出　　处：《水力发电》2022年第12期7-10,97,共5页Water Power

基　　金：中国三峡建工(集团)有限公司科研项目(JG/18021B,JG/18022B)。

摘　　要：为明确溪洛渡—向家坝水电站联合运行对下游河道水温的影响,基于向家坝下游主要水文站长序列水温监测资料、电站蓄水资料,对向家坝下游河段水温变化趋势和河段梯级建设水温影响进行了统计分析。结果表明,溪洛渡、向家坝联合运行使向家坝站水温4月~9月降低了0.4~1.8℃,11月~次年1月升高了1.2~2.2℃;升温期朱沱站—华弹站水温温差降低了0.2~1.0℃,寸滩站—华弹站水温温差降低了0.4~0.7℃,其余月份均无明显变化。可见,该影响虽可延续至三峡库尾寸滩站,但已有明显削弱。In order to clarify the impact of the joint operation of Xiluodu and Xiangjiaba hydropower stations on the downstream river water temperature,the variation trend of water temperature in the lower reaches of Xiangjiaba Hydropower Station and the impact of cascade hydropower station construction on water temperature in the lower reaches of Xiangjiaba Hydropower Station are statistically analyzed based on the water temperature monitoring data of the main hydrological stations in the lower reaches of Xiangjiaba Hydropower Station and the water storage data of the power station.The results show that,(a)the combined operation of Xiluodu and Xiangjiaba stations reduces the water temperature of Xiangjiaba Hydrological Station by 0.4-1.8℃from April to September and increases by 1.2-2.2℃from November to January of the next year;and(b)during the heating period,the temperature difference between Zhutuo and Huadan hydrological stations is decreased by 0.2-1.0℃,the temperature difference between Cuntan and Huadan hydrological stations is decreased by 0.4-0.7℃,and there is no significant change in other months.It can be seen that although the impact can be extended to Cuntan Hydrological Stations at the tail of Three Gorges Reservoir,it has been significantly weakened.

关 键 词：水库 天然河道 水温变化 影响分析 溪洛渡水电站 向家坝水电站 

分 类 号：TV211[水利工程—水文学及水资源]