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Analysis of Runoff Reduction Effect of Sponge Reconstruction in Old Urban Area Based on SWMM

In: Proceedings of the 2023 2nd International Conference on Urban Planning and Regional Economy (UPRE 2023)

Author

Listed:
  • Jing Wu

    (Lanzhou Jiaotong University)

  • Jianmin Ren

    (Lanzhou Jiaotong University)

  • Min Tian

    (Lanzhou Jiaotong University)

  • Yajun Bai

    (Lanzhou Jiaotong University)

Abstract

In order to study the application and reconstruction effect of low impact development storm water management measures for old urban areas, Maiji District of Tianshui in Gansu Province as the typical sample, SWMM model was established to analyze the reduction effect of rainwater runoff after sponge reconstruction under different return periods. The results show that the total runoff control rate under each return period after reconstruction has significantly increased and is more than 50%. The decrease of runoff peak value and lag maximum value reached 59.06% and 12 min respectively. The maximum growth rate of infiltration is 48.83%, the growth rate of water storage gradually increased and finally stabilizes at about 73%. The reduction rate of drainage is all above 25% of the original, and the reduction rate of accumulation reaches 71.4% when the return period is 1 year. The research results can provide guidance for the reconstruction of the old urban areas with the low return period rainstorm.

Suggested Citation

  • Jing Wu & Jianmin Ren & Min Tian & Yajun Bai, 2023. "Analysis of Runoff Reduction Effect of Sponge Reconstruction in Old Urban Area Based on SWMM," Advances in Economics, Business and Management Research, in: Reza Lotfi & Chukwunonso Kelvin Oraedu & Ferdous Ahmed (ed.), Proceedings of the 2023 2nd International Conference on Urban Planning and Regional Economy (UPRE 2023), pages 192-201, Springer.
    • Handle: RePEc:spr:advbcp:978-94-6463-218-7_22
    DOI: 10.2991/978-94-6463-218-7_22
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