面向水环境提升的平原城市河网水动力调控方案研究
Research on hydrodynamic regulation schemes for water environment improvement in plain urban river networks
廖轶鹏 1黎东洲 1李云 2粟一帆 1范子武1
作者信息
- 1. 南京水利科学研究院,江苏 南京 210029;水利部太湖流域水治理重点实验室,江苏 无锡 214131
- 2. 南京水利科学研究院,江苏 南京 210029
- 折叠
摘要
为了更好地解决城市河网水环境问题,系统分析水动力调控作用对河网水环境提升的效果.以苏州平原古城区河网水质提升为目标,基于古城区水质现状的原型观测,采用一维水动力-水质耦合模型研究了 3种引水条件、4种调控方式下的古城河网水质改善效果.结果表明,现状条件下苏州古城河网的主干河段溶解氧(DO)、氨氮(NH3-N)、化学需氧量(COD)质量浓度仍处于Ⅳ类水标准;随着水动力调控时间的增加,河网中河道水质改善幅度逐渐提高并趋于稳定;在所设计的两种水动力调控方案下,河网内大部分河道的水质可满足要求,达标率可达90%.研究结果可为苏州古城区等类似平原城市河网水质提升提供技术参考.
Abstract
To address the challenges of water environment management in urban river networks,this study systematically analyzes the impact of hydrodynamic regulation on water quality improvement.Focusing on the ancient urban river network in Suzhou's plain region,the study aims to enhance water quality based on field observations of the current conditions.A one-dimensional hydrodynamic-water quality coupled model was employed to examine the effects of three water diversion conditions and four regulation strategies on improving water quality.The results indicate that under current conditions,the dissolved oxygen(DO),ammonia nitrogen(NH3-N),and chemical oxygen demand(COD)concentrations in the main river channels of Suzhou's ancient city river network remain at Grade IV water quality standards.As the duration of hydrodynamic regulation increases,the water quality improvements in the river network become more pronounced and eventually stabilize.Under two designed hydrodynamic regulation schemes,the water quality of most river sections meets the required standards,with a compliance rate of approximately 90%.The findings provide technical guidance for improving the water quality of river networks in Suzhou and other similar plain urban areas.
关键词
平原河网/水动力/水环境提升/调控方案Key words
plain river network/hydrodynamics/water environment improvement/regulation scheme引用本文复制引用
出版年
2024
NETL
NSTL
万方数据