Flush Rules and Initial Flush Analysis of Cement Concrete Pavement

摘要

Road runoff was the chief factor to water body pollution.According to the cement concrete pavement flush evaluated by artificial rainfall model,this experiment indicated that the runoff coefficient of cement concrete pavement was 0.85,the flush coefficient of dissolvable pollutant of road runoff flush model k was 0.082,and the flush coefficient of indissolvable pollutant of road runoff flush model k was 0.057.With the increasing cumulate runoff ratio,the initial flush coefficient kn was decreasing.The 90％ emission of dissolvable pollutant and 30％ emission of indissolvable pollutant were removed by 30％ runoff.