摘要
分析总结了影响河道水温的多种因素,建立了一种河道水温预测模型,并以待建的云南糯扎渡水电站为例,预测分析了大坝建成后其下游河道水温随时间、空间变化的规律,以及水温变化对下游流域周围环境产生的有利影响及不利影响。预测结果表明,该模型具备模拟河道纵向水温变化的功能;水库的下泄水温是影响其下游河道水温变化规律和水温预测精度的重要参数。
Various factors affecting the water temperature of river are analyzed and summarized in this paper. A mathematical model for predicating water temperature of river is established and it has been used to predict downstream flow temperature gradient along with time and space for Yunnan Nuozhadu Reservoir. The effects by changing temperature of downstream flow after construction of the dam upon the advantages and disadvantages of surrounding environment have also been presented. The predicated results have shown that the mathematical model can be used to simulate the downstream flowing temperature of river, and the temperature of discharging flow is the important parameter affecting water temperature of downstream flow and the accuracy of the forecast model.
出处
《西安理工大学学报》
CAS
2003年第3期235-239,共5页
Journal of Xi'an University of Technology
关键词
下游河道
水温
预测模型
downstream river of reservoir
water temperature
forecast model
