A gauss-function based approach for flood control capacity assessment of integrated green and grey infrastructure

2020 ◽  
Author(s):  
Jia Wang ◽  
Jiahong Liu ◽  
Hao Wang ◽  
Chao Mei
Keyword(s):  
Control System ◽  
Flood Control ◽  
Integrated System ◽  
Source Control ◽  
Capacity Assessment ◽  
Rapid Urbanization ◽  
Urban Flood ◽  
Sponge City ◽  
Peak Rate ◽  
Gauss Function

<p>Under the background of climate change and rapid urbanization，the risk of urban flood is increasing across the globe. To alleviate the urban flooding problems, the sponge city strategy has been proposed in China. The urban flood control system based on sponge city is gradually formed, which is an integrated system composed of green and grey infrastructure. However, mechanism of the corresponding flood control function and corresponding quantitative assessment of flood control capacity of the integrated green and grey infrastructure is relatively lacking. Based on polit sponge cities in China, this study summarized and put forward the construction mode of urban inundation control system of sponge city, including source control system, stormwater pipe network system, over-standard stormwater storage and drainage system, etc., identified the mechanism of urban flood control functions of urban flood control system, including detaining, releasing, peak rate cutting, peak rate delaying and discharging the stormwater runoff. Furthermore, a gauss-function based approach for quantitative flood control capacity assessment of integrated green and grey infrastructure was established. This study builds the relationship between the gauss function and mechanism of urban flood control capacity, according to the mathematical meaning of parameters of the gauss function. It provides a new method for urban flood control capacity assessment of the integrated green and grey infrastructure.</p>

scholarly journals Development of a Heterogeneity Analysis Framework for Collaborative Sponge City Management

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1995 ◽  
Author(s):  
Bing Li ◽  
Shou Dong ◽  
Yue Huang ◽  
Guang Wang
Keyword(s):  
Water Quality ◽  
Flood Control ◽  
Principal Component ◽  
Collaborative Management ◽  
City Management ◽  
Analysis Framework ◽  
Rapid Urbanization ◽  
Urban Flood ◽  
Sponge City ◽  
City Construction

Rapid urbanization, inappropriate urban planning and the changing climate in many countries have resulted in flooding, water shortage and water pollution around the world. Although the sponge city concept has been applied in both macro-scales and micro-scales to address those challenges, research on the heterogeneity of different cities for sponge city construction and the collaborative management between cities is insufficient. Therefore, this paper proposes a multivariate cluster analysis framework and conducts an empirical study using 96 Chinese cities. By considering the local infrastructure, economic development, water resource distribution, water quality and precipitation characteristics in each city, and integrating the principal component analysis and a self-organizing feature mapping network, this paper shows the potential of regional and interregional sponge city collaborative management. This will provide an opportunity for developing a new sponge city management mechanism and will promote the establishment of multi-functional departments for urban flood control and water quality improvement.

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’.

Research on the Challenges and Solutions of Urban Flood Control System of Nanjing City

2014 ◽  
Vol 641-642 ◽  
pp. 84-87
Author(s):  
Xin Wen ◽  
Guo Hua Fang
Keyword(s):  
Control System ◽  
Flood Control ◽  
Drainage System ◽  
Flood Management ◽  
Urban Flood ◽  
Technology Application ◽  
Management Technology ◽  
Nanjing City ◽  
System Improvement ◽  
Reform And Opening Up

Currently, the development of flood control system of Nanjing City has been entering a new critical phase, facing some great challenging problems that never experienced before. To meet these challenges, this research initially reviewed the developing process of flood control system of Nanjing City after China's reform and opening up. Based on the analysis of current flood control situation, four major challenge of was summarized. To solve these problems, this research provided some productive suggestions for future development of flood control system of Nanjing City from six perspectives, namely principle of flood control, layout of flood control system, drainage system improvement, flood management, technology application and supporting measures.

scholarly journals SuDS & Sponge Cities: A Comparative Analysis of the Implementation of Pluvial Flood Management in the UK and China

2019 ◽  
Vol 11 (1) ◽  
pp. 213 ◽  
Author(s):  
Craig Lashford ◽  
Matteo Rubinato ◽  
Yanpeng Cai ◽  
Jingming Hou ◽  
Soroush Abolfathi ◽  
...  
Keyword(s):  
Land Surface ◽  
Economic Value ◽  
Flood Management ◽  
Future Research ◽  
Rapid Urbanization ◽  
Urban Flood ◽  
Sponge City ◽  
Rainfall Model ◽  
The Uk ◽  
Whole Life Costing

In recent decades, rapid urbanization has resulted in a growing urban population, transformed into regions of exceptional socio-economic value. By removing vegetation and soil, grading the land surface and saturating soil air content, urban developments are more likely to be flooded, which will be further exacerbated by an anticipated increase in the number of intense rainfall events, due to climate change. To date, data collected show that urban pluvial flood events are on the rise for both the UK and China. This paper presents a critical review of existing sustainable approaches to urban flood management, by comparing UK practice with that in China and critically assessing whether lessons can be learnt from the Sponge City initiative. The authors have identified a strategic research plan to ensure that the sponge city initiative can successfully respond to extreme climatic events and tackle pluvial flooding. Hence, this review suggests that future research should focus on (1) the development of a more localized rainfall model for the Chinese climate; (2) the role of retrofit SuDS (Sustainable Drainage Systems) in challenging water environments; (3) the development of a robust SuDS selection tool, ensuring that the most effective devices are installed, based on local factors; and (4) dissemination of current information, and increased understanding of maintenance and whole life-costing, alongside monitoring the success of sponge cities to increase the confidence of decision makers (5) the community engagement and education about sponge cities.

Safety Evaluation of Urban Flood Control System Based on Variable Fuzzy Pattern Recognition

2010 ◽  
Vol 159 ◽  
pp. 264-269 ◽  
Author(s):  
Ran Hang Zhao ◽  
Xiao Lei Lu ◽  
Min Wang
Keyword(s):  
Pattern Recognition ◽  
Control System ◽  
Flood Control ◽  
Indicator System ◽  
Assessment Model ◽  
System Level ◽  
Model Parameters ◽  
Urban Flood ◽  
Fuzzy Pattern Recognition ◽  
Fuzzy Pattern

Urban flood control system is in relation to the concentration of the urban population and security of the social wealth, but there has yet to a mature evaluation system. This article establish a security assessment model of urban flood control system which is based on the variable fuzzy set theory. First of all, building an evaluation indicator system according to the influencing factors; secondly, using fuzzy pattern recognition model to introduce model parameters and the time the two variable factors and get multiple levels of membership, then to conduct a consistency inspection; Finally, averaging the effective levels of membership and getting the final evaluation. Choosing the case of Heze in Shandong, it came to the conclusion that the city's flood control system level is between mild warning state and severe alert state, the evaluating result is in accordance with heze flood conditions.

Fuzzy Variable Assessment of Urban Flood Control System Safety in Jinan

2010 ◽  
Vol 159 ◽  
pp. 279-284
Author(s):  
Xing Ju Wang ◽  
Yu Wei Hao ◽  
Yue Lu
Keyword(s):  
Control System ◽  
Flood Control ◽  
Fuzzy Variable ◽  
Assessment Model ◽  
System Safety ◽  
Urban Flood ◽  
The Sustainable Development ◽  
The Stability ◽  
Variable Fuzzy Sets

Urban flood control system is a collection of various preventive measures taken to resist and mitigate flood. Assessment of urban flood control system safety is one of the important measures to coordinate the urban social planning and the urban flood control facilities.The assessment can also promote the sustainable development of city.In allusion to urban flood control system safety is a fuzzy concept with vague denotation, a fuzzy variable assessment model of urban flood control system safety is constructed in this paper based on theories of variable fuzzy sets and relative different functions.The method can determine relative membership degrees and functions of various indexes associated with the urban flood control system safety scientifically and reasonably; through changing the model,the stability of grade eigenvalues is tested; the mean of grade eigenvalues is calculated to improve the reliability of assessment results. The synthetical assessment of flood control system safety can be implemented with the method adopted in this paper.By 4 safety grades, 9 key indexes were screened in the urban flood control system of Jinan to implement the safety assessment in this paper. The case study of Jinan shows that the proposed method is of practical use.

Urban Flood Control System Based on 3G-Wireless Network and GIS Technology

2013 ◽  
Vol 791-793 ◽  
pp. 1752-1755
Author(s):  
Gang Zhang ◽  
Yang Shao ◽  
Lei Zhang ◽  
Wei Zhao
Keyword(s):  
Control System ◽  
Flood Control ◽  
Geographical Information ◽  
Surveillance Video ◽  
Gis Technology ◽  
Urban Flood ◽  
Sensing Technology ◽  
Pump Station ◽  
Information System Technology ◽  
Geographical Information System Technology

In recent years heavy rainstorm has occurred frequently in cities of China, which threatens to the safety of people and causes the flood control situation to become more complex and grim. Flood control depends on real-time flood data, such as rainfall, river stage, and PSRP (pump station running parameters). Therefore the accuracy and stability of data acquisition and transmission are particularly important. This paper explores to make use of geographical information system technology, 3G wireless networks, and sensing technology to design and implement an urban flood control system. This system can acquire and transmit flood data and surveillance video stably and efficiently. Experiments prove that this system can decision making and greatly improve efficiency of flood control.

scholarly journals Review on sponge city construction for flood management

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Femin Maria IX ◽  
Elba Helen George
Keyword(s):  
Green Infrastructure ◽  
Flood Control ◽  
Global Climate ◽  
Water Security ◽  
Flood Management ◽  
Environment Change ◽  
Urban Flood ◽  
Sponge City ◽  
The Sustainable Development ◽  
City Construction

Due to the global climate change and the rapid progress of urbanization, the frequent occurrence of flooding disasters and severe pollution seriously threaten the sustainable development of modern cities. To solve these problems, China first started the construction of the ‘Sponge City’. Sponge city can improve city’s ability to adapt to the environment change and to cope with floods; it can also make them more sustainable. It was not only meant for urban flood control, but also rainwater harvest, ecological restoration of urban land and water quality improvement. The rainfall received in 2020 in Hyderabad of India, has been the highest for the month October in a century. The risk is going to increase year after year in the whole nation. So India too needs a mission that mitigates flood risk and provides a pathway to water security. And the most promising solution across the world at this time can be the idea to adopt Sponge city construction. Improper research in this field will lead to huge maintenance difficulties and other related problems. This paper mainly focuses on presenting the concepts of sponge city construction along with its pathway. Not only does it focus on Sponge city’s benefits, but also its challenges are also stated, which leads to better understanding about its scope of continuing for future. Keywords: Flood control, sponge city, green infrastructure, urban floods.

scholarly journals A Systematic Review Comparing Urban Flood Management Practices in India to China’s Sponge City Program

2021 ◽  
Vol 13 (11) ◽  
pp. 6346
Author(s):  
Nawnit Kumar ◽  
Xiaoli Liu ◽  
Sanjena Narayanasamydamodaran ◽  
Kamlesh Kumar Pandey
Keyword(s):  
Systematic Review ◽  
Management Practices ◽  
Meta Analysis ◽  
Low Impact Development ◽  
Flood Management ◽  
Special Focus ◽  
Rapid Urbanization ◽  
Public And Private ◽  
Urban Flood ◽  
Sponge City

India and China are among the two most populous countries in the world that concomitantly incur substantial flood-related losses, and both countries are also experiencing rapid urbanization. This study was conducted to trace the major urban flooding cases in these countries between 2014 and 2020 and probe into their existing flood mitigation policies with special focus on China’s Sponge City Program (SCP). A systematic review using preferred reporting items for systematic review and meta-analysis protocols (PRISMA) was conducted. Results showed that both these countries experienced comparable challenges in terms of the need for localized low impact development (LID) planning given their extensive geographically induced diversities. Improved inter-governmental and inter-agential coordination, new avenues of funding involving public and private enterprises with accommodations to source local products and services to boost local economies, improved practical and technical understanding for working professionals and improved community acceptance and participation are also recommended. It is concluded that India should try to focus on holistic urban water resilience as China does with its Sponge City Program and that China should take a cue from India’s contractual and tender-based private service sourcing methods to tide over its financial setbacks in order to achieve its ambitious targets for 2030.

scholarly journals Sponge City: Using the “One Water” Concept to Improve Understanding of Flood Management Effectiveness

Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 583
Author(s):  
Albert Z. Jiang ◽  
Edward A. McBean
Keyword(s):  
Climate Change ◽  
Flood Control ◽  
Flood Management ◽  
Hydrologic Cycle ◽  
Management Effectiveness ◽  
Urban Flood ◽  
Holistic View ◽  
Sponge City ◽  
Rapid Construction ◽  
The One

Urban flood-related issues are substantial in China, arising from rapid construction of megacities over decades with insufficient flood control, all being made worse by climate change. Since Sponge City (SC) options are primarily effective at maintaining the water balance at the surface, flooding continues. In response, the One Water concept is used to demonstrate the need to respond to dimensions beyond SC and shown herein to have potential to reduce the impacts of major storms (e.g., suppress 100-year flooding to a 25-year flooding equivalent). However, climate change causes more intense storms, indicating the intensity of the 100-year storm will increase by ~0.23% annually over the next 70 years. Hence, given sufficient SC options, the 100-year storms may only be effectively reduced to a 50-year storm, at best by SC options. “One Water” is utilized as a concept to demonstrate structured thinking about how each dimension of the hydrologic cycle can be employed to consider the degree of interconnection, allowing improved assessment of various components of the hydrologic cycle and SC options. Examples are used to demonstrate how the concept of One Water links the array of components of the hydrologic cycle together, generating a holistic view of urban water resource security.

Sign in / Sign up

Export Citation Format

Share Document