摘要
针对三峡水库蓄水运用后支流库湾春季水华频现问题，利用MIKE21模型建立了香溪河一三峡库区整体平面二维水动力数学模型，对春季不同水文条件下香溪河口回水区的流速进行了数值模拟。计算结果表明，三峡水库单独调控时，小于香溪河库湾水华的临界流速0．05m／s．而支流水库单独调控时，在丰水年香溪河口流速可大于0．05m／s，仅利用三峡水库小幅度水位变动（0．6～1．0m／d）对支流库湾流速的改善效果十分有限，而利用干支流水库对香溪河库湾流速的联合调控效果明显，可适度控制三峡库区支流库湾水华的爆发。
Aiming the problem of water bloom frequently in spring after Three Gorges Reservoir storage, the software MIKE 21 is used to establish two-dimensional hydrodynamic model of Xiangxi River and Three Gorges Reservoir. And the velocity of backwater region in Xiangxi River estuary is simulated under the different hydrologic condition in spring. The result shows that when Three Gorges Reservoir dispatches alone, velocity of Xiangxi River estuary is less than 0.05 m/s; when Xiangxi Reservoir dispatches alone, velocity of Xiangxi River estuary is larger than 0.05 m/s in wet year; it implies that small variation of water level change （0.6-1.0 m/d） for Three Gorges Reservoir has little role to improve tributary velocity; but the joint dispatching of Xiangxi River with main and tributary channels can improve the velocity obviously, which can properly control the water bloom of Three Gorges Reservoir region.
出处
《水电能源科学》
北大核心
2011年第7期16-18,117,共4页
Water Resources and Power
基金
水利部公益性行业科研专项基金资助项目(20081035)
国家水体污染控制与治理科技重大专项基金资助项目(2009ZX07104-006)
关键词
水动力调控
水华
数值方法
香溪河
三峡水库
hydrodynamic control
water bloom
numerical method
Xiangxi River
Three Gorges Reservoir
