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一种河湖水系连通方案的综合评估方法——以汤逊湖湖泊群为例（英文）

论文摘要

The Interconnected River System Network （IRSN） plays a crucial role in water resource allocation, water ecological restoration and water quality improvement. It has become a key part of the urban lake management. An evaluation methodology system for IRSN project can provide important guidance for the selection of different water diversion schemes. However, few if any comprehensive evaluation systems have been developed to evaluate the hydrodynamics and water quality of connected lakes. This study developed a comprehensive evaluation system based on multi-indexes including aspects of water hydrodynamics, water quality and socioeconomics. A two-dimensional （2-D） mathematical hydrodynamics and water quality model was built, using NH3-N, TN and TP as water quality index. The IRSN project in Tangxun Lake group was used as a testbed here, and five water diversion schemes were simulated and evaluated. Results showed that the IRSN project can improve the water fluidity and the water quality obviously after a short time of water diversion, while the improvement rates decreased gradually as the water diversion went on. Among these five schemes, Scheme V showed the most noticeable improvement in hydrodynamics and water quality, and brought the most economic benefits. This comprehensive evaluation method can provide useful reference for the implementation of other similar IRSN projects.

论文目录

  • 1 Introduction
  • 2 Study area
  • 3 Methodology
  •   3.1 The DEM-based parallel computing hydrodynamic and water quality model
  •   3.2 The IRSN scheme evaluation method
  •     3.2.1 Water quality improvement rate
  •     3.2.2 Concentration change index
  •     3.2.3 Water standard exceeding ratio
  •     3.2.4 Cost and benefit evaluation method
  • 4 Model setup
  •   4.1 Mesh generation
  •   4.2 Initial and boundary conditions
  •   4.3 Model calibration and verification
  • 5 Evaluation of the IRSN scheme of the Tangxun Lake group
  •   5.1 Connectivity scheme
  •   5.2 Connectivity scheme assessment
  •     5.2.1 Hydrodynamic analysis
  •     5.2.2 Water quality analysis
  •     5.2.3 Water diversion benefits assessment
  •     5.2.4 Optimal connectivity scheme
  • 6 Conclusions and discussion

    • 文章来源

    类型: 期刊论文

    作者: 杨卫,张利平,张艳军,李宗礼,肖宜,夏军

    来源: Journal of Geographical Sciences 2019年03期

    年度: 2019

    分类: 基础科学,工程科技Ⅱ辑

    专业: 水利水电工程

    单位: State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University,Hubei Provincial Water Resources and Hydropower Planning Survey and Design Institute,General Institute of Water Resources and Hydropower Planning and Design, Ministry of Water Resources

    基金: National Key Research and Development Program,No.2017YFA0603704,No.2017YFC1502500

    分类号: TV213.4

    页码: 389-405

    总页数: 17

    文件大小: 985K

    下载量: 197

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