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由于修建闸坝等水利工程对河道内水流、悬浮物、底泥等具有强烈的扰动作用,闸控河段水质转化过程呈现出多介质、多相态、多形式的特点。基于水质多相转化机理,分析了不同调度方式下闸控河段的水质迁移转化特点;提出在“水体-悬浮物-底泥-生物体”界面内开展水质多相转化研究的总体思路,推导了能有效描述各种相态水质之间传质过程的数学表达式,进而构建了具有一定物理机制的闸控河段水质多相转化模型,为客观认识水闸调度在水资源保护中所起的作用提供科学依据。
Due to the strong disturbance of water flow, suspended sediment and sediment in the watercourse due to the construction of sluices and other water conservancy projects, the process of water quality conversion in Gansu reach shows multi-media, multiphase and multi-forms. Based on the mechanism of multiphase transformation of water quality, the characteristics of water quality transfer and transformation under different control modes were analyzed. The general idea of multiphase water quality transformation in the interface of “water body-suspended matter-sediment-body” , A mathematical expression that can effectively describe the mass transfer process between various phases of water quality is deduced. Then, a multiphase water quality transformation model with a certain physical mechanism is constructed. In order to objectively understand the sluice scheduling in water resources protection From the role of providing a scientific basis.