摘要
为深入了解降雨期间城市合流制管网与地表水量水质的互馈机理及输移规律,采用基于GAST与SWMM耦合的水动力水质高效高分辨率水环境数值模型,模拟分析了合流制节点在降雨期间的溢流水量及其漫溢和回流过程,以及溢流污染物TSS在地表的输移规律。结果表明,在3600~21600 s期间,3种重现期下(2、10、50年一遇)溢流污染物TSS>300 mg/L的比例总体呈下降趋势;道路径流与节点漫溢污染物TSS在地表的输移情况基本吻合,主要沿道路方向输移;随着降雨重现期的增大,地表溢流水量、面积以及溢流污染物TSS的浓度和负荷均呈先增加后减少的趋势。
To deeply comprehend the mutual feeding mechanism and transport principle of the urban combined sewer network and surface water quality during rainfall,an efficient and high‑resolution water environment numerical model of hydrodynamic water quality based on the coupling of GAST and SWMM was employed to simulate and analyze the overflow volume,the overflow and backflow processes at the node of the combined sewer system,as well as the transport principle of the overflow pollutant TSS on the surface during rainfall.During the period ranging from 3600 seconds to 21600 seconds,the proportion of the overflow pollutant TSS exceeding 300 mg/L in the three recurrence intervals(2 years,10 years,and 50 years)demonstrated a general downward trend.The road runoff was essentially in line with the surface transport of nodal pollutant TSS,mainly along the road direction.With the escalation of the rainfall recurrence interval,the surface overflow volume,area,as well as the concentration and load of the overflow pollutant TSS,initially increased and then decreased.
作者
刘立军
王添
侯精明
栾广学
银雅伦
景静
范臣臣
刘园
LIU Li‑jun;WANG Tian;HOU Jing‑ming;LUAN Guang‑xue;YIN Ya‑lun;JING Jing;FAN Chen‑chen;LIU Yuan(State Key Laboratory of Eco‑hydraulics in Northwest Arid Region of China,Xi’an University of Technology,Xi’an 710048,China;PowerChina Northwest Engineering Corporation Limited,Xi’an 710065,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2024年第19期127-136,共10页
China Water & Wastewater
基金
国家自然科学基金资助项目(52079106)
中德合作交流项目(M-0427)
陕西省重点研发计划项目(2023GXLH-042)
中国电力建设股份有限公司重点科技项目(DJ-ZDXM-2022-41)。
关键词
合流制管网
节点漫溢
高分辨率模拟
污染物输移
GPU加速技术
combined sewer network
node overflow
high‑resolution simulation
pollutant transport
GPU acceleration technology
