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生态机组的设置会对水库水温结构产生影响,从而影响水库及下游河道的生态环境,为此建立了垂向二维水动力水温模型,并利用实测水温数据对模型参数进行了率定,进而利用该模型分析了未设置生态机组和设置生态机组两种情况对水库一年中水温分布及下泄水温的影响。结果表明,设置生态机组时,由于其引水位置较低,使水库水体上下掺混增强,促进了热量交换,导致水体上下温差减小,同时造成水库下泄水温与天然河道水温有一定的温差,温差比未设置生态机组时要小。
The setting of ecological unit will affect the water temperature structure of reservoir, thus affecting the ecological environment of the reservoir and the downstream river. For this purpose, a vertical two-dimensional hydrodynamic water temperature model is established, and the model parameters are calibrated by using measured water temperature data, The model analyzes the influence of the two cases of no ecological unit and ecological unit setting on the temperature distribution and discharge temperature of the reservoir in one year. The results show that when the ecologic unit is set up, the lower water diversion position makes the water body mix up and down to enhance the heat exchange, resulting in the decrease of the temperature difference between the upper and lower sides of the water body. At the same time, there is a certain temperature difference between the discharged water temperature of the reservoir and the water temperature of the natural river. Than when no eco-unit is smaller.