Improved techno-economic evaluation of Blue Green Solutions for managing flood risk to infrastructure

改进蓝绿解决方案的技术经济评估，以管理基础设施的洪水风险

• 批准号: NE/M008169/1
• 负责人: Ana Mijic
• 金额: $ 6.33万
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2014
• 资助国家: 英国
• 起止时间: 2014 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FM008169%2F1
• 关键词: Improved; techno; economic; evaluation; Blue

The increased frequency of extreme weather events associated with climate change results in the increased risk of surface water (pluvial) flooding, posing a great threat to the integrity and function of critical urban infrastructure. During the winter of 2013/14 twelve major winter storms occurred resulting in more than 5,000 homes, businesses and infrastructure being flooded in southern England. Green infrastructure, in the form of Sustainable Urban Drainage Systems (SUDS), has been proposed as a potential measure that is likely to have a significant effect on flood risk in urban environments. However, despite their multifunctional benefits, SUDS often fail the feasibility criteria of Flood Risk Management (FRM) cost-benefit assessment. The Environment Agency (EA) highlighted a number of knowledge gaps concerning the cost and benefits of large-scale SUDS retrofitting schemes, in particular the data to remove uncertainties concerning the economic appraisal of innovative solutions. The scientific community and engineering consultants have also recognised the importance of utilising vegetation to enhance urban water management by delivering a range of essential services to towns and cities and supporting urban adaptation to climate change. The Climate-KIC funded Blue Green Dream (BGD) project gathered eminent partners to develop tools for assessing the interactions between urban water (blue) systems and vegetated (green) areas and hence maximise the multifunctional benefits of so-called Blue Green Solutions (including SUDS). Building on that research, this project will assign green infrastructure interventions as assets by progressing knowledge and understanding of the ability of Blue Green Solutions to provide cost-beneficial Flood Risk Management services. This will be achieved by brining together the expertise from three BGD project partners - Imperial College London, Deltares and AECOM, supported by the EA Water London Team. The Decoy Brook sub-catchment in London Borough of Barnet will be used as a case study for: a) mapping of Blue Green Solutions for infrastructure protection using the Adaptation Support Tool; b) improving the cost-benefit assessment of SUDS by quantifying multifunctional benefits of innovative Blue Green Solutions; and c) producing an advanced tool for full cost-benefit analysis of the proposed SUDS retrofitting scheme in compliance with the Flood Risk Management assessment. This will enable the EA to transparently and objectively assess Blue Green Solutions against the broad range of benefits. In addition, it will provide AECOM an example of a robust business case for utilising SUDS/Blue Green Solutions to protect infrastructure that addresses the reduction in the levels of uncertainty associated with the results from such analyses. Outputs from this project will be used to provide evidence to the Greater London Authority on the development of a pan London approach to delivering sustainable drainage systems. In addition, more accurate and robust valuing of SUDS and demonstrating the full return on each pound invested will enable EA's SUDS retrofit projects to compete on an equal footing for Flood and Coastal Erosion Risk Management Grant in Aid funding.

与气候变化相关的极端天气事件日益频繁，导致地表水（洪积）泛滥的风险增加，对关键城市基础设施的完整性和功能构成巨大威胁。在2013/14年冬季，英格兰南部发生了12场大的冬季风暴，导致5,000多户家庭、企业和基础设施被洪水淹没。绿色基础设施，可持续城市排水系统（SUDS）的形式，已被提出作为一个潜在的措施，可能有一个显着的影响，在城市环境中的洪水风险。然而，尽管其多功能的好处，SUDS往往失败的洪水风险管理（FRM）的成本效益评估的可行性标准。环境署（EA）强调了有关大规模SUDS改造计划的成本和效益的一些知识差距，特别是消除创新解决方案经济评估不确定性的数据。科学界和工程顾问也认识到利用植被通过为城镇提供一系列基本服务和支持城市适应气候变化来加强城市水资源管理的重要性。Climate-KIC资助的蓝色绿色梦想（BGD）项目聚集了杰出的合作伙伴，以开发评估城市水（蓝色）系统和植被（绿色）区域之间相互作用的工具，从而最大限度地提高所谓的蓝色绿色解决方案（包括SUDS）的多功能效益。在该研究的基础上，该项目将通过不断了解和理解蓝色绿色解决方案提供具有成本效益的洪水风险管理服务的能力，将绿色基础设施干预措施作为资产。这将通过汇集来自三个BGD项目合作伙伴的专业知识来实现-帝国理工学院伦敦，Delaware和AECOM，由EA Water伦敦团队提供支持。伦敦Barnet自治市的Decoy Brook子流域将被用作案例研究：a）使用适应支持工具绘制基础设施保护的蓝绿色解决方案; B）通过量化创新蓝绿色解决方案的多功能效益，改进SUDS的成本效益评估;以及c）根据洪水风险管理评估，为拟议的SUDS加装计划提供全面成本效益分析的先进工具。这将使EA能够透明和客观地评估蓝色绿色解决方案的广泛利益。此外，它将为AECOM提供一个强大的商业案例的例子，利用SUDS/蓝色绿色解决方案来保护基础设施，解决与此类分析结果相关的不确定性水平的降低。该项目的成果将用于向大伦敦管理局提供证据，以制定一个泛伦敦的方法来提供可持续的排水系统。此外，对SUDS进行更准确和更稳健的估值，并展示每一磅投资的全部回报，将使EA的SUDS改造项目能够在平等的基础上竞争洪水和海岸侵蚀风险管理赠款援助资金。

项目成果

The use of semi-structured interviews for the characterisation of farmer irrigation practices

• DOI: 10.5194/hess-20-1911-2016
• 发表时间: 2016-01-01
• 期刊: HYDROLOGY AND EARTH SYSTEM SCIENCES
• 影响因子: 6.3
• 作者: O'Keeffe, Jimmy;Buytaert, Wouter;Sinha, Rajiv
• 通讯作者: Sinha, Rajiv

Water Footprint of Cities: A Review and Suggestions for Future Research

• DOI: 10.3390/su7078461
• 发表时间: 2015-06
• 期刊: Sustainability
• 影响因子: 3.9
• 作者: W. Paterson;R. Rushforth;B. Ruddell;M. Konar;Ikechukwu C. Ahams;J. Gironás;A. Mijić;A. Mejia

Economic analysis of wider benefits to facilitate SuDS uptake in London, UK

• DOI: 10.1016/j.scs.2016.10.002
• 发表时间: 2017
• 期刊: Sustainable Cities and Society
• 影响因子: 11.7
• 作者: Juan Ossa-Moreno;Karl M. Smith;A. Mijić