大型水库水体动态分层特性试验研究及水源分层优化利用探讨

Research on Dynamic Stratification Characteristics of Water Body of Large Reservoirs and Optimal Utilization of Water

通过取水样对比试验,研究了宝珠寺水库水体在不同季节里的物理化学指标分层特性,结果显示:5月的水体,超过一半的指标表现出非常明显的水深相关性,而12月的水体,仅有pH、CO32-、矿化度3项指标表现出微弱的水深相关性,其余指标均未表现出深度分层特性。分析认为大型水库的水体分层特性与其库水交换率、入库径流特性、调节性能及水库运用方式密切相关,具有动态变化的特征。掌握其中的变动规律,可以更好地对水工建筑物进行布置与设计,更高层次地优化配置、管理、利用大型水库的水源。

By studying the dynamic stratification characteristics of the water body in different seasons in Baozhusi Reservoir by using contrastive experiment, the results show that more than half of the water body＇s physicochemical indexes in May are closely related to the depth of the water. By contrast, the water in December just shows slight relativity between the depth of the water and its physicochemical indexes in terms of the pH, CO3^2-, and mineralization, whereas other indexes do not possess such kind of features. It is believed that the stratification characteristics of the water body in large reservoirs are closely related to the rate of water interchange in the reservoir, the characteristics of the inflow stream to the reservoir, the regulation capability and the scheduler of reservoir. To master the variational laws of the water in reservoirs is of great significance to optimization of water allocation, administration and utilization of water resources.