| 考虑边界反射作用河流污染混合区的简化算法 |
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| 引用本文： | 武周虎.考虑边界反射作用河流污染混合区的简化算法[J].水科学进展,2014,25(6):864-872. |
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| 作者姓名： | 武周虎 |
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| 作者单位： | 青岛理工大学环境与市政工程学院, 山东青岛 266033 |
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| 基金项目： | 国家自然科学基金资助项目(51379097)~~ |
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| 摘 要： | 以排污口为坐标原点,通过数学推证了岸边排放时P(x,y)点与中心排放时Q(x/4,±y/2)点的污染物浓度对应相等.通过计算实验和曲线拟合,分别给出了中宽河流污染混合区最大长度、最大宽度和相应的纵坐标、面积等参数以及河流中心线和两岸线沿程浓度分布的实用化公式,给出了污染混合区的近似外边界曲线方程.对中宽河流污染混合区范围的计算和环境敏感点的浓度预测,具有重要实用价值,为工程技术人员提供了准确、简便、快捷的实用化方法.
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| 关 键 词： | 边界反射 浓度分布 相似性关系 中宽河流 污染混合区 简化算法 |
| 收稿时间： | 2014-05-06 |
The simplified algorithm for the pollution mixing zone in rivers in consideration of the boundary reflection |
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| WU Zhouhu.The simplified algorithm for the pollution mixing zone in rivers in consideration of the boundary reflection[J].Advances in Water Science,2014,25(6):864-872. |
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| Authors: | WU Zhouhu |
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| Institution: | School of Environmental and Municipal Engineering, Qingdao Technological University, Qingdao 266033, China |
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| Abstract: | Mathematical deductions proved that the pollutant concentration at location P(x, y) in the bank discharge situation is equal to the one at location Q(x/4,±y/2) in the central discharge (the origin of both is at the discharge point). According to our numerical experiments and curve regression of the results, this paper gives the parameters of the pollutant mixing zone including the coordinates of the maximum length and width and its area, the practical formula for concentration distribution along the river's center line and bank, and the approximate outer boundary curve equation of the pollution mixing zone. The results have great practical value in the calculation of the pollution mixing zone in medium-width rivers and the estimation of the concentration at environmentally sensitive locations. It also provides an accurate, convenient, fast and practical method for engineers. |
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| Keywords: | boundary reflection concentration distribution similarity relationships medium-wide river pollution mixing zone simplified algorithm |
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