均匀降雨条件下不同下垫面产汇流特性试验研究  

Research on Runoff-producing and Flow Concentration Characteristics of Different Underlying Surfaces under Uniform Rainfall Conditions

作　　者：王永磊[1,2] 李振[3] 景雪[4] 陈淑芬[1] 李梅[1] 张克峰[1] 

机构地区：[1]山东建筑大学市政与环境工程学院,山东省城市污水处理与资源化工程技术研究中心,济南250101 [2]北京工业大学建筑工程学院,北京100124 [3]济南市城乡规划编制研究中心,济南250101 [4]济南市房屋建设综合开发集团,济南250101

出　　处：《中国农村水利水电》2012年第2期38-41,共4页China Rural Water and Hydropower

基　　金：山东省科技攻关计划项目(2009GG2GGC06004);山东省资源节约型社会科技支撑体系建设专项(2008JY01);2011年度山东省住房和城乡建设厅科技计划项目(2011YK032)

摘　　要：雨水产汇流过程受地表状况、降雨强度、降雨历时、土壤前期含水量等多因素的影响。试验采用SBS(屋面防水材料)、不透水地砖(人行道铺设材料)及草地3种不同下垫面材料,进行了多场模拟降雨试验。试验结果表明,透水性差的下垫面(SBS、不透水地砖),主要影响因素是雨强、历时,历时越长,雨强越大,径流系数越大。透水性较好的下垫面(草地),土壤前期含水量是影响产流量的主要因素。试验同时表明草地覆盖率大于80%,径流系数显著减小。经对试验数据进行回归分析,建立了一定条件下降雨历时径流系数,雨强径流系数,流量径流系数之间的函数模型。The process of runoff-producing and flow concentration is affected by surface conditions,rainfall intensity,duration,soil moisture and other factors.Using three different underlying surface materials of SBS（roofing materials）,impervious tiles（sidewalk paving materials） and grass,rainfall experiments are conducted.The results show that,for the poor permeability of the underlying surface（SBS,impervious tiles）,main factors are rainfall intensity,duration.And duration is longer,rainfall intensity is greater,the runoff coefficient is greater.For the better permeable land surface（grass）,pre-soil moisture content is the main factor.The experiment also shows that the grass cover is greater than 80%,runoff coefficient is reduced significantly.The mathematical relationships of rainfall duration and runoff coefficient,rainfall intensity and runoff coefficient,flow and runoff coefficient are made.

关 键 词：均匀降雨 城市下垫面 径流系数 人工降雨 产流 

分 类 号：X37[环境科学与工程—环境工程]