Discussion of application of low impact development technology in the construction of sponge city in China

2020 ◽  
Vol 188 ◽  
pp. 297-302
Author(s):  
Wei Huang ◽  
Wen Lin ◽  
Lei Huang ◽  
Hong Weng ◽  
Ping Huang ◽  
...  
Keyword(s):  
Low Impact Development ◽  
Sponge City ◽  
Development Technology

scholarly journals Interpretation and application of Sponge City guidelines in China

2020 ◽  
Vol 378 (2168) ◽  
pp. 20190222 ◽  
Author(s):  
James Griffiths ◽  
Faith Ka Shun Chan ◽  
Michelle Shao ◽  
Fangfang Zhu ◽  
David Laurence Higgitt
Keyword(s):  
Best Practice ◽  
Low Impact Development ◽  
National Guidelines ◽  
Rapid Urbanization ◽  
Urban Flood ◽  
Sponge City ◽  
Surface Water Management ◽  
Body Of Knowledge ◽  
The Usa ◽  
The Uk

‘Sponge City’ is the term used to describe the Chinese government's approach to urban surface water management. The concept was conceived in 2014 in response to an increasing incidence of urban flooding or water-logging in Chinese cities. While ambitious and far-reaching in its aim (of decreasing national flood risk, increasing water supply and improving water quality), the initiative must be implemented by individual subprovincial or municipal-level government entities. Thus, while the concept is similar to sustainable drainage systems (SuDS) in the UK (or low-impact development (LID) in the USA), it is developing with different regional characteristics, and during continuing rapid urbanization. Indeed, the increasing use of national rather than international examples of best practice reflects a growing body of knowledge that has evolved since the start of the Sponge City initiative. In this paper, interpretation and development of the national Sponge City guidelines are assessed for the Ningbo Municipality, an affluent and rapidly expanding city on China's low-lying east coast. While climate, geology and socio-economic factors can all be seen to influence the way that national guidelines are implemented, project financing, integration and assessment are found to be of increasing influence. This article is part of the theme issue ‘Urban flood resilience’.

scholarly journals Assessment on the Effectiveness of Urban Stormwater Management

2020 ◽  
Author(s):  
Yixin Zhang ◽  
Weihan Zhao ◽  
Xue Chen ◽  
Changhyun Jun ◽  
Jianli Hao ◽  
...  
Keyword(s):  
Green Infrastructure ◽  
Urban Areas ◽  
Stormwater Management ◽  
Suspended Solids ◽  
Low Impact Development ◽  
Stormwater Runoff ◽  
Reduction Rate ◽  
Urban Resilience ◽  
Sponge City ◽  
Global Issues

Stormwater management is a key urban issue in the world, in line with the global issues of urban sprawl and climate change. It is urgent to investigate the effectiveness in managing stormwater with different strategies for maintain urban resilience. A method based on a storm water management model (SWMM) was developed for assessing the control of stormwater runoff volume and the percentage removal of suspended solids by implementing a Sponge City strategy. An interdisciplinary approach was adopted incorporating Low Impact Development (LID) with urban Green Infrastructure and Gray Infrastructure paradigms in a typical old residential community in Suzhou, China. Four types of sponge facilities for reducing stormwater runoff were bio-retention cells, permeable pavements, grassed pitches, and stormwater gardens. The simulation results indicate that the stormwater pipe system can meet the management standard for storms with a five-year recurrence interval. The volume capture ratio of annual runoff is 91% and the reduction rate of suspended solids is 56%. This study demonstrates that Sponge City strategy is an effective approach for managing stormwater, particularly in old and densely populated urban areas. Implementing spongy facilities with a LID strategy for stormwater management can significantly enhance urban water resilience and increase ecosystem services.

scholarly journals Sponge city construction in China: policy and implementation experiences

Water Policy ◽  
2018 ◽  
Vol 21 (1) ◽  
pp. 19-37 ◽  
Author(s):  
Chenyao Xiang ◽  
Jiahong Liu ◽  
Weiwei Shao ◽  
Chao Mei ◽  
Jinjun Zhou
Keyword(s):  
Local Governments ◽  
Flood Control ◽  
Large Scale ◽  
Central Government ◽  
Low Impact Development ◽  
Economic Conditions ◽  
Chinese Government ◽  
Urban Water ◽  
Sponge City ◽  
City Construction

Abstract To deal with the three universal urban water problems – namely storm floods, water pollution and water shortage – China has implemented a comprehensive solution: the Sponge City Construction Project. Sponge cities aim to reduce runoff and pollution, and also to restore downstream ecologies. They combine low impact development methods with grey infrastructures, large-scale flood control projects and rehabilitation. This paper describes Chinese experiences of construction and financing for implementation of sponge cities, which could provide references to other countries for building sustainable, climate-resilient cities and urban water management systems. It illustrates the objectives and methods of the sponge city design and demonstrates the differences in configuration and funding structures in cities of different climates and economic conditions. The total construction area involved in the pilot cities covers 449 km2. The configurations are distinct due to different economic conditions, climates and land forms: a humid district inclines to drainage-efficient approaches and pollution control devices, while a semi-humid district prefers green infrastructures and rainwater reuse facilities. The Chinese government plays an important role in the funding of sponge cities: Chinese central government provided CNY (¥)20.7 billion for the construction of 16 cities during 2015–2017, while the rest came from local governments and non-governmental investors.

Bioretention cell efficacy in cold climates: Part 1 — hydrologic performance

2012 ◽  
Vol 39 (11) ◽  
pp. 1210-1221 ◽  
Author(s):  
U.T. Khan ◽  
C. Valeo ◽  
A. Chu ◽  
B. van Duin
Keyword(s):  
Field Experiments ◽  
Peak Flow ◽  
Low Impact Development ◽  
High Volume ◽  
Simulation Experiments ◽  
Flow Rates ◽  
Development Technology ◽  
Cold Condition ◽  
Urban Stormwater Runoff

Bioretention cells are an emerging low impact development technology that address urban stormwater runoff concerns. Field and column experiments were conducted to assess the efficacy of bioretention cells in cold conditions. Field experiments in a prairie environment demonstrated a significant decrease (91.5%) in effluent volumes compared to influent volumes. The majority (∼60%) of the runoff percolated to the surrounding soils or evapotranspirated. Cold condition performance significantly impacted high volume events and was characterized by significantly higher effluent volumes, significantly lower runoff storage, higher effluent peak flow rates, and longer peak delays. A partially frozen surface layer caused the changes in performance. Long-term simulation experiments on the columns indicated a significant decrease in saturated hydraulic conductivity over the first 4 equivalent years of operation, before levelling to a constant value.

scholarly journals Study on the Application of Expressway Construction Based on Sponge City Concept

2020 ◽  
Vol 6 (1) ◽  
pp. 17
Author(s):  
Yuanzhi Chen
Keyword(s):  
Mathematical Model ◽  
Quantitative Analysis ◽  
Adverse Effects ◽  
Low Impact Development ◽  
Scene Analysis ◽  
Optimal Planning ◽  
Sponge City ◽  
Planning And Design ◽  
Expressway Construction ◽  
Engineering Projects

<p>Currently, in the active trial stage, sponge city concept has been applied in many low-impact development facilities on expressways in China, but many applications are not widely used. From four angles of pavement, slope, interchange and service area of expressway, this paper explains the adverse effects brought by rainwater, and then gives, and it carries out scene analysis combined with actual engineering projects with some feasible application schemes. Finally, the concept of sponge city at present is summarized, and it is considered that the optimal planning and design can be made only after establishing a reliable mathematical model and carrying out quantitative analysis.</p>

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