Research on the Technical Model of Sponge City Construction: Taihu Road Park Demonstration Zone

DOI

10.2991/978-94-6463-453-2_4How to use a DOI?

Keywords

Sponge City; Low Impact Development; Stormwater Management Model

Abstract

Sponge City refers to a type of urban development that fully utilizes the absorption, storage, infiltration, and attenuation functions of ecosystems such as buildings, roads, green spaces, and water bodies to effectively control runoff, achieve natural storage, infiltration, and purification of rainwater through strengthened urban planning, construction, and management. This paper studies the technical model of Taihu Road Park Demonstration Zone in Hexi District, Tianjin City. Based on Low Impact Development (LID) and Best Management Practices (BMPs), two technical models for the demonstration zone are designed: Model One focuses on increasing retention and uses infiltration as a supplement, mainly utilizing LID facilities such as depressed green spaces and permeable pavements; Model Two focuses on increasing infiltration with retention as a supplement, mainly utilizing LID facilities such as bio-retention facilities and permeable pavements. Then, using Storm Water Management Model (SWMM) software, the runoff volume and pollutant concentrations in the central lake of the final drainage area under different rainfall recurrence intervals (2-year, 3-year, and 5-year) for the two technical models are simulated and compared with the scenario without LID facilities. The results show that under 3-year rainfall conditions (similar to 2-year and 5-year results), the runoff control rate before LID facilities were installed is around 51%. When using Model One (depressed green spaces) where retention is the main strategy and infiltration is supplementary, the runoff control rate increases to 75%, while for Model Two (bio-retention facilities) where infiltration is the main strategy and retention is supplementary, the runoff control rate is 69%. Regarding Total Suspended Solids (TSS), the control rate before LID facilities were installed is 51%, whereas with Model One, the control rate increases to 87%, and with Model Two, it is 55%. Therefore, considering the high groundwater level in the northern region and the current situation of Taihu Road Park, Model One: retention as the main strategy and infiltration as supplementary, is more suitable for the study area of Taihu Road Park.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Jinwen Wang
PY  - 2024
DA  - 2024/07/26
TI  - Research on the Technical Model of Sponge City Construction: Taihu Road Park Demonstration Zone
BT  - Proceedings of the 2024 International Conference on Urban Planning and Design (UPD 2024)
PB  - Atlantis Press
SP  - 23
EP  - 38
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-453-2_4
DO  - 10.2991/978-94-6463-453-2_4
ID  - Wang2024
ER  -