公路建设项目水环境风险评价方法

基于某高速公路环境风险评价实例，对高速公路水环境风险评价方法进行了探讨。认为目前在公路交通危险品运输对地表河流的风险评价中，采用的风险概率计算模型应增加交通事故中的泄漏概率项；危险品的泄漏速率计算采用非稳态孔口出流计算方法比稳态孔口出流计算方法更符合客观实际。采用卷积分模型成功预测计算了危险品泄漏后河流中污染物浓度的分布。

Method of Water Environmental Risk Assessment on Highway Construction Project

Based on a risk assessment on a highway construction project, the methods of risk assessment for danger goods transportation on highway are discussed. It is proposed that the risk probability model that has been used in surface water risk assessment for dangerous chemical transportation by highway should be added an item of leakage probability. For the calculation of leaking rate of dangerous chemical, the non-stable mouth discharge method is more reasonable than the stable mouth method. Rolling integral model is used successfully in predicting the distribution of pollutant concentrations along a river at different time after an accident of danger leakage. 1 tab, 1 fig, 6 refs.