【摘要】 建立了城市雨水管网暴雨洪水计算模型,采用Keifer-Chu法、径流系数法、Horton下渗曲线法、等流时线法、马斯京根法分别对暴雨时程分布、不透水区产流、透水区产流、地表汇流、管网汇流进行分析和计算,并以长沙雅华小区实测资料对该模型进行检验。结果表明,该模型精度较高,简单方便,对我国城市化地区的雨水径流计算具有重要的指导意义和实用价值。更多还原

【Abstract】 An urban rainfall runoff simulation model is proposed.In this model,the temporal distribution of rainstorm is calculated by using Keifer-Chu method,the runoff yield in impervious areas is computed by using the isochronal method,while in pervious areas by using Horton Infiltration formula,the surface flow concentration is calculated by utilizing time-contour method and the pipe network flow concentration by utilizing Muskinggum method.A case in Yahua neighborhoods in Changsha is discussed by using the model proposed in this paper,of which the parameters of the model were calibrated and verified.The results show that the model has a good precision.The achievements of this paper can be regarded as a means of urban rainfall runoff simulation.更多还原