水温分层对水库污染物输移的影响  

Impact of stratification condition on reservoir pollutant transport

作　　者：陆俊卿[1] 张小峰[2] 徐林春[3] 任秀文[1] 任实[2] 

机构地区：[1]环境保护部华南环境科学研究所,广东广州510655 [2]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [3]广东省水利水电科学研究院,广东广州510610

出　　处：《武汉大学学报（工学版）》2013年第2期143-148,共6页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:50909047);广东省自然科学基金项目(编号:10151065501000001);珠江水利委员会珠江水利科学研究院开放研究基金项目(编号:[2010]KJ02)

摘　　要：水库温度分层使水库水动力特性及污染物输移过程异于均温型水库.采用三维非线性RNG浮力流模型对分层水库污染物输移的典型过程进行模拟,分析了水体分层条件对污染物输移的影响,探讨了不同分层条件下污染物在不同密度流流动区域射流区、交换区、潜流区的输移扩散规律.研究结果表明,水库分层条件对污染物输移有显著影响,污染物输移的分离点水深、交换区厚度、无量纲时间参数与水库分层强度成反比.研究结果可为水库水质、水生环境管理与调度、水库应急预警方案的制定提供参考.The thermal stratified reservoir is different from the the average temperature reservoir on the hydrodynamic characteristics and the transportation process of the pollutants. The typical process of contaminant transporting in stratified reservoir was simulated by the nonlinear RNG anisotropic buoyant turbu- lence model proposed; the rules of contamination mixing and transport in various flow regimes of stratified reservoir are analysed. Results show that reservoir stratification conditions have significant effect on the pollutant transport process. The depth of separation point, the thickness of exchange zone and the dimensionless time parameter were inversely proportional to stratification condition. The results can facilitate the contamination control and provide useful information for water quality management.

关 键 词：分层水库 污染物 分层条件 数值模拟 

分 类 号：TV697[水利工程—水利水电工程]