不同角度丁坝附近可溶性危险化学品扩散示踪试验  

Tracer Experiments on the Diffusion of Soluble Hazardous Chemicals Around Spur-dike with Different Angles

作　　者：韩冬梅[1,2] 蒋军成[1,2] 陈丽萍[1,2] 

机构地区：[1]南京工业大学城市建设与安全工程学院,南京210009 [2]江苏省城市与工业安全重点实验室,南京210009

出　　处：《工业安全与环保》2009年第8期31-35,共5页Industrial Safety and Environmental Protection

基　　金：国家"十一五"科技支撑计划课题资助(2006BAK01B03)

摘　　要：利用水槽试验台,完成不同角度丁坝附近可溶性危险化学品泄漏扩散示踪试验,获得在不同角度非淹没丁坝周围示踪剂扩散变化的试验数据。通过对这5组水槽试验数据的分析得到丁坝附近水流流态的变化及其对其周围可溶性危险化学品扩散的影响:不同角度丁坝产生的回流区的结构基本相同,但回流区的大小受丁坝角度的影响较大,其中90°正挑丁坝所产生的回流区范围最大;上挑和下挑丁坝回流区的范围都会随丁坝偏离正挑丁坝位置的偏角越大而变得越小;在示踪剂释放量一定的情况下,回流区范围越大示踪剂在回流区内的平均浓度越低。Spur - dike has an important effect on the distribution of pollutants in rivers. Based on the flume tracer experiments of soluble hazardous chemicals around spurdikes with different angles, the flow pattern and the concentration distributions of soluble hazardous chemi- cals around the spur - dike are obtained. Analyses on the flow characteristics around the spur - dike and the changed distribution of the tracer＇s concentration find out that the areas of the circumfluence zones are greatly affected by the angles of spurdike, but their patterns are similar; the areas of the circumfluence zones are biggest when the spur - dike is 90°; the bigger the deviation angle is, the smaller the circumfluence zones; and when with the same amount of pollutants, the bigger the circumfluence zone is, the lower the average concentration ofthe tracer.

关 键 词：非淹没丁坝 水槽 可溶性危险化学品 丁坝角度 示踪剂 

分 类 号：X132[环境科学与工程—环境科学]