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本文采用二维河流模型,对跨河桥梁围堰事故下悬浮物的扩散规律及危险品运输事故下污染物的运移规律进行模拟,预测分析了扰动状态下悬浮物的影响范围及危险品污染团到达目标水域的最大浓度和运移时间,并针对性地提出了跨河桥梁的水环境风险减缓措施,为跨河桥梁的水环境保护工作提供科学借鉴。
In this paper, the two-dimensional river model is used to simulate the diffusion of suspended matter under cofferdam and the transport of pollutants under dangerous goods transportation accidents. The influence range of suspended matter under disturbed condition and the contamination of dangerous goods The maximum concentration and migration time of the group reached the target waters, and pointed out the measures to mitigate the water environment risks of the bridges across the river in order to provide a scientific reference for the water environment protection of the bridges across the river.