闸坝调度对污染河流水环境影响综合实验研究

为了研究闸坝各种调度方式下河流污染物的时空变化规律,探索了闸坝调度对污染河流水环境的作用机理,在槐店闸前期研究和实验的基础上,设计了不同闸坝调度方式对污染河流水环境影响的综合实验方案,并开展了现场实验,研究了槐店闸浅孔闸在现状调度、闸门不同开度和闸门全部关闭3种调度方式下的水体、悬浮物及底泥污染物变化规律.结果表明:闸坝调度会对河流水质产生一定的影响,其影响过程呈现出复杂的非线性关系;闸坝调度也会对水体、悬浮物和底泥中的污染物产生不同程度的影响,并促使污染物在不同介质中进行转化;流量和水深等因素会对底泥和悬浮物中污染物的释放产生影响.研究工作为构建闸坝作用下河流水环境模型、研究闸坝作用规律、实施闸坝科学调度奠定了实验基础.

Comprehensive experimental research on impacts of dam operation on water environment of polluted river

The purpose of this research is to analyze the spatial and temporal variation law of polluted river water quality under various operation conditions of dam, and to explore the mechanism of the operation affecting to water environment. According to the previous experimental research on Huaidian gate, a series of comprehensive experimental programs on the influence of river water environment by dam operation were designed. Field experiments were then carried out to study the variation law of pollutants in water, suspended solids and sediment under different opening conditions. Results show that the dam operation has complex and non-linear impacts on river water quality. Dam operation also has different degrees of impacts on the pollutants in water, suspended solids and sediment, and promotes the pollutants to transform in different media. Meanwhile, water flow, water depth and other factors can impact the release of pollutants in sediment and suspended solids. This study provides an experimental basis for the further research of model construction of water environment, action law research on gate, and reasonable operation.