中文摘要：

水库水温分层不仅对水库水质的降解过程产生影响,更重要的是通过对水库流场的作用进一步影响库区水质分布,并对下泄水质产生影响,因此对分层型水库的水质模拟必须考虑水温分层影响。建立了宽度平均的立面二维水温水质耦合模型,采用建立的数学模型对某拟建水库水温水质进行了模拟。结果表明,分层型水库库区水质受温度场、流场影响明显,存在垂向分层、纵向差异等现象。研究成果可为水库水环境影响评价及保护提供参考。

英文摘要：

Reservoir water temperature stratification not only have an impact for the degradation of the water quality factors, but also affect the concentration distribution and the outflow water quality. Therefore water quality simulation of stratified reservoir must consider the affect temperature stratification. This paper establish the vertical two-dimensional water quality coupled model of the average width,with the prototype observation data to validate the model. The water quality simulation results by using the model of a proposed reservoir show that stratified reservoir water quality is affected by temperature field, flow field obviously and there are phenomenons of vertical stratification and longitudinal difference and the certain homogenization phenomenon for outflow water quality. Research results can provide a reference for the environmental impact assessment and environmental protection of the reservoir.