南水北调中线突发水污染事件的快速预测
发布时间：2018-10-14 17:21
【摘要】：依据南水北调中线干渠资料,开展了正常输水情况下串联明渠内可溶污染物浓度分布规律数值模拟研究。采用数值模拟、数学归纳和统计分析方法,提出表征污染物输移扩散特征的峰值输移距离、污染带长度和峰值浓度的快速预测公式;通过示范工程验证了快速预测公式的可行性。结果表明:1串联明渠内,峰值输移距离随渠道流速减小而减小,并且污染带长度增加值随明渠内流速减小而减小,但是峰值浓度随明渠流速减小而增加;2快速预测公式计算结果与现场试验实测结果的误差均不到15%,证明了快速预测公式的合理性和可行性。这些研究结果为南水北调中线工程突发可溶性水污染事件应急预警方案的制定提供了科学依据。
[Abstract]:Based on the data of the central route of South-to-North Water transfer Project, a numerical simulation study was carried out on the distribution of soluble pollutants in a series open channel under normal water conveyance. By means of numerical simulation, mathematical induction and statistical analysis, the fast prediction formulas of peak transport distance, length of pollution zone and peak concentration are proposed to characterize the characteristics of pollutant transport and diffusion. The feasibility of the fast prediction formula is verified by demonstration project. The results show that: 1 in the series open channel, the peak transport distance decreases with the decrease of the channel velocity, and the increase of the length of the pollution zone decreases with the decrease of the flow velocity in the open channel. However, the peak concentration increases with the decrease of the open channel velocity, and the error between the calculation results of the fast prediction formula and the field test results is less than 15, which proves the rationality and feasibility of the fast prediction formula. These results provide a scientific basis for the formulation of the emergency and early warning scheme for the sudden and soluble water pollution events in the middle route of South-to-North Water transfer Project.
【作者单位】： 天津大学水利工程仿真与安全国家重点实验室;北京市勘察设计研究院有限公司;
【基金】：国家科技重大专项基金资助项目(2012ZX07205005) 天津市应用基础与前沿技术研究计划自然科学基金重点项目(13JCZDJC36200)~~
【分类号】：X52
本文编号：2271106
[Abstract]:Based on the data of the central route of South-to-North Water transfer Project, a numerical simulation study was carried out on the distribution of soluble pollutants in a series open channel under normal water conveyance. By means of numerical simulation, mathematical induction and statistical analysis, the fast prediction formulas of peak transport distance, length of pollution zone and peak concentration are proposed to characterize the characteristics of pollutant transport and diffusion. The feasibility of the fast prediction formula is verified by demonstration project. The results show that: 1 in the series open channel, the peak transport distance decreases with the decrease of the channel velocity, and the increase of the length of the pollution zone decreases with the decrease of the flow velocity in the open channel. However, the peak concentration increases with the decrease of the open channel velocity, and the error between the calculation results of the fast prediction formula and the field test results is less than 15, which proves the rationality and feasibility of the fast prediction formula. These results provide a scientific basis for the formulation of the emergency and early warning scheme for the sudden and soluble water pollution events in the middle route of South-to-North Water transfer Project.
【作者单位】： 天津大学水利工程仿真与安全国家重点实验室;北京市勘察设计研究院有限公司;
【基金】：国家科技重大专项基金资助项目(2012ZX07205005) 天津市应用基础与前沿技术研究计划自然科学基金重点项目(13JCZDJC36200)~~
【分类号】：X52
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