水利水电科技进展2025，Vol.45Issue(4)：39-44,59,7.DOI:10.3880/j.issn.1006-7647.2025.04.006
建筑物密度对降雨径流溶解态污染物传输过程的影响
Influence of building density on transport process of dissolved pollutants in rainfall runoff
摘要
Abstract
To analyze the influence of building density in urban areas on the transport process of dissolved pollutants,taking conservative dissolved pollutants as the object,a two-dimensional mathematical model for rainfall runoff and pollutant transport in the building area was established,and the effects of different building densities on the mass concentration,transport rate and cumulative transport process of dissolved pollutants were simulated and analyzed.The simulated results show that when the building density ranges from 4%to 16%,the flow rate increases relatively quickly in the middle stage of runoff confluence.With the increase of building density,the water depth downstream of the building gaps first increases and then decreases,and reaches its maximum value at a building density of 36%.The mass concentration of pollutants at the regional outlet generally decreases gradually,while the pollutant transport rate first increases and then decreases.In the case of staggered building arrangements,the upstream pollutants are intermittently transported downstream through the gaps between buildings.When the building density is greater than 9%,the mass concentration and transport rate of pollutants at the regional outlet exhibit multiple fluctuates before the runoff reaches its maximum.With the increase of building density,the transport rate of pollutants decreases and the peak occurrence time is delayed.The final cumulative transport proportion of pollutants decreases with the increase of building density.关键词
建筑物密度/溶解态污染物/污染物传输/降雨径流/数值模拟Key words
building density/dissolved pollutants/pollutant transport/rainfall runoff/numerical simulation分类
建筑与水利引用本文复制引用
成浩科,王旭,张涛涛,肖洋,沈菲..建筑物密度对降雨径流溶解态污染物传输过程的影响[J].水利水电科技进展,2025,45(4):39-44,59,7.基金项目
长江生态环保集团有限公司员工科研项目(NBYG202300324) （NBYG202300324）
国家自然科学基金项目(52309102,52379075) （52309102,52379075）
苏州市水利水务科技项目(2023004) （2023004）
