| 高学平,张 晨,郭 磊,韩延成.河道汛期行洪冲污研究[J].水利学报,2005,36(10):1199-1203 |
| 河道汛期行洪冲污研究 |
| River pollutant sluicing by flood flow |
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| DOI： |
| 中文关键词: 河道 行洪冲污 水质模型 污染物输移扩散及降解 |
| 英文关键词: river pollutant sluicing water quality model transport diffusion |
| 基金项目: |
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| 中文摘要: |
| 海河水质呈恶化趋势，尤其是汛期排入的雨污水是海河有机污染的主要来源，利用汛期洪水冲污是改善河道水质的手段之一。依据连续性方程、动量方程、自由表面方程、状态方程和水质输运方程，采用有限差分法，建立海河河道水质模型，模拟海河汛期行洪后，污染物的输移扩散及降解转化过程，研究泄流量与冲污的关系。通过计算海河河道汛期行洪时氨氮、高锰酸盐指数浓度随时间变化情况表明，在不同泄流量下，污染物输移扩散及降解转化速率不同，流量大时，能更快的把污染物送入海河口。 |
| 英文摘要: |
| Based on the continuity equation, momentum equation, equation for free surface waterflow, equations for state and water quality transport equation the finite difference memod is applied to develop the water quality model for Haihe River. The model is used to simulate the process of transport, diffusion and decay of pollutant in the river during the discharging of flood. The variations of NH3-N and CODMn concentration indicate that the transport and diffusion of pollutant are dependent on flood discharge. The more flood flow, the faster pollutant is transported to the estuary. |
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