考虑多要素影响的汤河水库水温结构模拟与分析  

Simulation and Analysis on Water Temperature Structure Considering the Influence of Multiple Factors of Tanghe Reservoir

作　　者：敖瑞贵 闫晓惠 关昊鹏 林琳 许士国 AO Ruigui;YAN Xiaohui;GUAN Haopeng;LIN Lin;XU Shiguo(Department of Construction Engineering,Dalian University of Technology,Dalian 116024,China;Liaoning Tanghe Reservoir Administration Co.LTD,Liaoyang 111008,China;State Environmental Protection Key Laboratory of Drinking Water Source Protection,Chinese Research Academy of Environmental Sciences,Beijing 100012,China)

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024 [2]辽宁汤河水库管理局有限责任公司,辽宁辽阳111008 [3]中国环境科学研究院国家环境保护饮用水水源地保护重点实验室,北京100012

出　　处：《水文》2024年第1期104-111,118,共9页Journal of China Hydrology

基　　金：中国环境科学研究院国家环境保护饮用水水源地保护重点实验室开放基金(2022YYSYKFYB05);中央级公益性科研院所基本科研业务费专项(2022YSKY-01);国家自然科学基金面上项目(51879031)。

摘　　要：为全面掌握汤河水库全库区水温结构变化及多种要素对水温的影响程度和范围,建立水库的三维水动力水温模型,结合水温分层指数(RWCS)量化水温结构,并考虑气温、蒸发、入流水温及流量多要素,预测不同情景下的水温变化。经验证模型实测与模拟水位决定系数(R^(2))为0.991,表中底层实测与模拟水温R^(2)分别为0.985、0.976和0.958,模型精度良好。预测结果表明:从库尾到坝前水温垂向结构差异明显,水温分层持续时间不同;水库水温分层与气温和蒸发量呈正相关,而与入流水温呈负相关,且主要影响时期为夏季分层期;入库流量越大,径流潜入库区位置越往下,对温跃层的破坏和影响范围越大,大洪水后水温分层显著减弱。To fully understand the changes in water temperature structure and the degree and scope of various factors affecting water temperature in the Tanghe reservoir area,a three-dimensional reservoir hydrodynamic model was established,and the water temperature structure was quantified using the water temperature stratification index(RWCS).The water temperature changes under different scenarios were predicted by considering various factors such as air temperature,evaporation,inflow water temperature,and flow rate.The verified model has a determination coefficient(R^(2))of 0.991 for measured and simulated water levels,and R^(2) values of 0.985,0.976,and 0.958 for measured and simulated water temperatures at the surface,middle and bottom layers,demon⁃strating good model accuracy.The results revealed a variation in the vertical water temperature from the end of the reservoir to the front of the dam,as well as a discrepancy in the duration of water temperature stratification.The stratification of reservoir wa⁃ter temperature was found to be positively correlated with air temperature and evaporation,while being negatively correlated with inflow water temperature,and the primary influence period was found to be the summer stratification period.The higher the inflow flow rate,the lower the position of runoff infiltration into the reservoir,and the greater the destruction and influence range of the thermocline,with significant weakening of water temperature stratification after large floods.

关 键 词：水库水温 多要素 水温预测 水动力模拟 

分 类 号：X524[环境科学与工程—环境工程] P33[天文地球—水文科学]