摘要
本文研究了黄土高原丘陵区域径流受石油类污染的两种过程和与之相对应的两种模型,根据石油类污染物污染过程特点和延河水文与径流特点及流域自然地理特征,建立了一维多沙河流中石油类污染物的吸附模型。模型中主要考虑了河流悬移质、推移质泥沙和底泥与石油类的相互作用以及河流的弥散作用对石油类迁移的影响。运用拉普拉斯变换得到了模型的解析解。由室内静态和动态试验,确定模型中各参数;并分析了几个主要参数变化对模拟结果的影响。运用实测资料对模型进行了验证,并根据延安环保局监测资料预测分析了两个典型的石油类污染源排污对水体的影响。预测结果表明:在15min内两污染源分别造成了600m和500m的石油类污染带。
Two different processes of oil pollution happened to silt-laden stream in hilly area,northwest China,are studied and corresponding mathematical models are established.The first one is namely one dimensional adsorption model.In the model the interaction between sedimentation and oil and the dispersion effect of flow on oil are taken into account.The Laplace transform is adopted to deduce the analytical solution of the model.The parameters of the model are obtained from the model test carried out in laboratory and the effects of the major parameters on simulation result are studied.It is predicted that the length of polluted river section will be 500-600m in 15min if pollution is happened.
出处
《水利学报》
EI
CSCD
北大核心
2004年第9期105-110,共6页
Journal of Hydraulic Engineering
基金
国家自然科学基金项目资助50378077)
教育部高等学校优秀青年教师教学科研奖励计划资助
关键词
石油类污染物
多沙河流
迁移模型
吸附模型
oil pollution
silt-laden stream
interaction between sedimentation and oil
dispersion effect
adsorption model
transport
