博斯腾湖湖流及矿化度分布研究

Flow field and salinity distribution of large inland lake

根据大型内陆湖泊水动力、气象、水环境特征,建立了博斯腾湖二维水动力、矿化度数学模型,预测分析了不同风场、水文条件、水资源调度方案对湖流、矿化度空间分布的影响。研究发现:风场是湖流、矿化度空间分布的主要影响因素:吞吐流对流场、矿化度分布的影响居次要地位,但在静风条件下,吞吐流对取(进)水口附近的局部水域水流流态及矿化度空间分布特征有较大影响;水资源开发利用将对湖泊环境产生一定影响,在进行水工建筑物布设时,应综合考虑风力、风向、吞吐流等各种因素,进行方案比选。

The 2-D hydrodynamic model and water quality model for Bosteng Lake, Xinjiang Autonomous Region, are established according to the characteristics of water flow, meteorological conditions and water environment of the lake. The validity of the models is verified by observation data. On this basis, the models are used to predict the salinity distribution in the lake during various wind fields under different hydrological conditions and different water resources utilization schemes. It is found that wind flow is the main factor affecting the water flow and salinity distribution in the lake but the incoming water and outflow water will significantly affect the water flow and salinity distribution in the vicinity of the inlet and outlet of the lake. The force and direction of wind as well as the discharge of incoming water and outflow water must be comprehensively considered if a new pump station is designed for further utilization of the water resources of the lake.