城市地表雨水汇流特性及计算方法分析  

Analyses of Properties and Calculation Methods of Urban Surface Rainwater Conflux

作　　者：任伯帜[1] 邓仁建[2] 

机构地区：[1]湖南科技大学土木学院,湖南湘潭411201 [2]长沙理工大学河海学院,湖南长沙410076

出　　处：《中国给水排水》2006年第14期39-42,共4页China Water & Wastewater

基　　金：湖南省自然科学基金资助项目(00jjy2055);湖南省教委资助项目(59838300)

摘　　要：介绍了城市雨水地表汇流的计算方法,通过算例研究得出:传统推理法可应用于城市设计洪峰流量的计算,但不能真实地反映雨水口径流流量过程;瞬时单位线法对实测资料有较大依赖,难以应用于城市径流流量过程的计算;非线性水库法及等流时线法的参数较容易确定,且计算的流量过程更接近实际,若对精度要求较高,宜采用非线性水库法,若对精度要求一般则可采用等流时线法。Calculation methods of urban surface rainwater conflux are introduced. Theory analysis and example calculation show that the traditional inferential method can be applied to calculate the peak flow of a storm. However, it cannot indicate the runoff process of the gully. The instantaneous unit hydrograph depends significantly on the actual measuring data, thus it is difficult to be used in the runoff discharge hydrograph calculation. The parameters of non-linear reservoir method and the isochronal method can be determined easily, and their conflux calculation processes are closer to the practical process. Nonlinear reservoir method would be a good choice under a high accuracy requirement, while the isochronal method is better for a low accuracy requirement.

关 键 词：雨水汇流 雨水管道 计算方法 

分 类 号：TU992.02[建筑科学—市政工程]