INFLUENCE LAW OF RAINWATER GARDENS SPATIAL LAYOUT ON RUNOFF PROCESS IN BUILDING COMMUNITIES

MA Xin; HOU Jingming; LI Bingyao; LUAN Guangxue; WANG Junhui; LI Donglai; DU Yingen; YANG Dangfeng; JI Guoqiang

doi:10.13205/j.hjgc.202212014

Volume 40 Issue 12

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(12): 105-111

MA Xin, HOU Jingming, LI Bingyao, LUAN Guangxue, WANG Junhui, LI Donglai, DU Yingen, YANG Dangfeng, JI Guoqiang. INFLUENCE LAW OF RAINWATER GARDENS SPATIAL LAYOUT ON RUNOFF PROCESS IN BUILDING COMMUNITIES[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 105-111. doi: 10.13205/j.hjgc.202212014

Citation:

MA Xin, HOU Jingming, LI Bingyao, LUAN Guangxue, WANG Junhui, LI Donglai, DU Yingen, YANG Dangfeng, JI Guoqiang. INFLUENCE LAW OF RAINWATER GARDENS SPATIAL LAYOUT ON RUNOFF PROCESS IN BUILDING COMMUNITIES[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 105-111. doi: 10.13205/j.hjgc.202212014

Citation:

MA Xin, HOU Jingming, LI Bingyao, LUAN Guangxue, WANG Junhui, LI Donglai, DU Yingen, YANG Dangfeng, JI Guoqiang. INFLUENCE LAW OF RAINWATER GARDENS SPATIAL LAYOUT ON RUNOFF PROCESS IN BUILDING COMMUNITIES[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 105-111. doi: 10.13205/j.hjgc.202212014

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INFLUENCE LAW OF RAINWATER GARDENS SPATIAL LAYOUT ON RUNOFF PROCESS IN BUILDING COMMUNITIES

doi: 10.13205/j.hjgc.202212014

1. State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, China;
2. Northwest Engineering Corporation Limited, China Power Construction Group Co., Ltd, Xi'an 710065, China;
3. Shaanxi Xixian Sponge City Engineering Technology Co., Ltd, Xi'an 710061, China

Received Date: 2021-10-19
Available Online: 2023-03-23

Abstract

Abstract

To explore the influence of the spatial layout of rainwater garden in the building community on the runoff process, a 1D and 2D coupling hydrodynamic model with SWMM (storm flood management model) pipe network module and GAST (surface hydrodynamic numerical model based on GPU acceleration technology) was adopted in this research, and the runoff process under the measured rainfall condition was simulated and calculated by taking Tianfuheyuan community in Xixian New Area as an example. The rainwater gardens were arranged in the upper, middle and lower reaches of the Tianfuheyuan community respectively, to simulate the regulation effect on the outlet runoff of the pipe network, and more than 6 return periods and 18 typical conditions were conducted in this paper. The results showed that the coupling model could be used to accurately simulate the process of urban pipe network drainage and surface inundation; the Nash efficiency coefficients were 0.80 and 0.76 in the two measured rainfall events, representing good accordance with the measured data. With the increase in design rainfall return period, the total runoff control rate decreased gradually. Under the same return period, the total runoff control rate of the rainwater garden arranged on the downstream side was increased by 5.33% to 8.74% compared with that on the upstream side, and that’s an obvious improvement. The research results can provide a reference for optimizing the spatial layout of rainwater gardens in building communities.
- coupling model,
- rainwater garden,
- space layout optimization,
- numerical simulation,
- total runoff control rate

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References(19)

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