水利水电科技进展2018，Vol.38Issue(4)：1-6,20,7.DOI:10.3880/j.issn.1006-7647.2018.04.001
建筑物密度及排列方式对小区地表径流的影响
Effects of building density and arrangement on surface runoff process in urban resident
摘要
Abstract
Building density and arrangement are important factors of the runoff process in urban resident area.Based on the two-dimensional shallow water equations and the building-hole method which was used to simulate the buildings,a rainfall run off model of urban community was established.Related artificial rainfall experimental results were used to validate the model parameters,and then the influences of building density and two arrangement types of inline layout and staggered layout in runoff process were studied.The results show that the time of concentration increases with the increasing building density,they satisfy the exporential function relation.For the same building density,the time of concentration in staggered layout is larger than that in inline layout.The difference between these two layouts is increasing as the building density increases.At the cross-sections where building exists,average water depth and average flow velocity are greater than non-building situation,and they increase with the building density.At the non-building cross-sections,the average depth is similar to the situation of non-building but the average velocity is lower and it decreases with the increasing building density.The resistance coefficient increases with the building density.When the building density is less than 16%,the resistance coefficient increases slowly,but it increases significantly when the building density surpasses 16%.关键词
地表径流/建筑物密度/汇流时间/阻力系数/数值模拟Key words
surface runoff/building density/time of concentration/resistance coefficient/numerical simulation分类
天文与地球科学引用本文复制引用
肖洋,冯雯,张涛涛,梁东方..建筑物密度及排列方式对小区地表径流的影响[J].水利水电科技进展,2018,38(4):1-6,20,7.基金项目
国家重点研发计划(2016YFC0402605) （2016YFC0402605）
江苏省第五期"333 工程"培养资金(BRA2017371) （BRA2017371）
高等学校学科创新引智计划(B17015) （B17015）
