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森林城镇交界域内建筑受林火威胁风险的模型构建和应用举例
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作者 李梦醒 王紫微 周魁斌 《林业科学》 EI CAS CSCD 北大核心 2024年第11期119-127,共9页
【目的】开展森林城镇交界域内建筑受林火威胁风险的模型构建与风险等级划分,为合理规划城镇防火设计和灭火资源配置提供科学依据。【方法】以火行为为基础,分析森林火灾产生的热辐射强度和飞火颗粒数量。通过耦合火焰长度模型、火焰倾... 【目的】开展森林城镇交界域内建筑受林火威胁风险的模型构建与风险等级划分,为合理规划城镇防火设计和灭火资源配置提供科学依据。【方法】以火行为为基础,分析森林火灾产生的热辐射强度和飞火颗粒数量。通过耦合火焰长度模型、火焰倾角模型、火焰辐射模型和飞火颗粒流量模型,提出以热辐射、飞火颗粒和建筑重要度为指标的交界域火灾威胁建筑的风险等级划分方法,采用赋值法将交界域火灾风险分为3个等级,并给出对应的形容词评级。利用局部参数敏感性分析对火焰辐射模型和飞火颗粒流量模型的输入参数进行重要度排序。将间距作为参照,定量划分热辐射和飞火颗粒的等级。以韩国蔚珍郡林火为例,分析社区内建筑的风险等级。【结果】依据归纳总结的文献资料和试验数据,将建筑暴露在热辐射中的等级分为3级,分别为0~9、9~30、≥30 kW·m^(-2);将建筑暴露在飞火颗粒中的等级分3级,分别为0~2、2~3、≥3个;从生命、经济、社会和环境影响力等因素,将建筑重要度分为4级。构建交界域火灾威胁建筑的风险模型,从危险严重程度将建筑所受风险分为高、中、低3级,并给出各等级对应特点。用新建的风险模型评估韩国蔚珍郡林火对面积400 m^(2)单层乙类厂房的破坏等级,在火线强度5000 kW·m^(-1)、风速2 m·s^(-1)和间距10 m的情况下,该厂房所受火灾风险为中等。【结论】通过局部参数敏感性分析,火焰辐射模型和飞火颗粒流量模型的参数重要度排序从高到低依次是火焰温度、间距、大气透射率、火焰发射率、火线强度和环境风速。交界域内建筑所受最大热流密度和飞火颗粒数量随火线与建筑间距增大而减小,随风速和火线强度增大而增大。 展开更多
关键词 森林城镇交界域 风险分级 热辐射 飞火颗粒 野火
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A review of post-incident studies for wildland-urban interface fires 被引量:2
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作者 Benjamin Gaudet Albert Simeoni +2 位作者 Steven Gwynne Erica Kuligowski Noureddine Benichou 《Journal of Safety Science and Resilience》 2020年第1期59-65,共7页
Post-incident studies provide direct and valuable information to further the scientific understanding of Wildland-Urban Interface(WUI)fires.Most post-incident studies involve data collection in the field(i.e.a“resear... Post-incident studies provide direct and valuable information to further the scientific understanding of Wildland-Urban Interface(WUI)fires.Most post-incident studies involve data collection in the field(i.e.a“research field deployment”).In this review,technical reports of post-incident studies for WUI fire and other natural disasters were analyzed and professionals directly involved in WUI fire research field deployments were interviewed.The goal of this review is to provide a resource for future WUI studies regarding the development of safe and effective fieldwork procedures,the collection and integration of accurate and relevant data,and the establishment of practical lessons learned.Three main stages of WUI fire post-incident studies are identified and described in detail.Data collection methodologies,data attributes,logistical practices and lessons-learned were compiled from various past studies and are presented here in the context of application to WUI fire. 展开更多
关键词 wildland-urban interface fire wui fire Post-incident study Natural disaster study
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Understanding future changes to fires in southern Europe and their impacts on the wildland-urban interface 被引量:1
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作者 Anne Ganteaume Renaud Barbero +1 位作者 Marielle Jappiot Eric Maillé 《Journal of Safety Science and Resilience》 CSCD 2021年第1期20-29,共10页
Southern Europe is a highly fire-prone region where extreme fires have often disastrous consequences on both structures and people.Human activities and fire weather conditions favouring ignitions and propagation have ... Southern Europe is a highly fire-prone region where extreme fires have often disastrous consequences on both structures and people.Human activities and fire weather conditions favouring ignitions and propagation have always been the drivers of such fires but anthropogenic climate change alongside the extension of wildland-urban interface(WUI)that concentrates both assets and fire ignitions have the compounding effect of exacerbating fire risk.WUI are currently not adequately prepared to sustain events whose frequency and intensity are foreseen to increase in the future as shown during the extreme fires that occurred recently in Euro-Mediterranean countries.This work presents the context of WUI fires in the Euro-Mediterranean region,their driving forces and their impacts on society,with insights from three recent catastrophic fires that drew much attention.In this context,we propose a conceptual framework for understanding the WUI issue assessing the implications for fire risk and providing some guidance to mitigate this risk,updated management strategies as well as comments about gaps in our current knowledge and how we might address this problem in the future.A successful approach to reduce fire risk in the future will require building resilient landscapes and communities better prepared to face these extreme fire events in which WUI population,forest managers,land planners,civil protection,and policy-makers need to work together to improve the safety and resilience of these fire-prone areas. 展开更多
关键词 wildland-urban interface Mediterranean region Fire risk Resilient community and landscape fire weather conditions VULNERABILITY
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城镇-森林交界域火灾灾害链网络模型构建及风险分析 被引量:11
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作者 宋英华 张小莹 吕伟 《中国安全生产科学技术》 CAS CSCD 北大核心 2020年第5期122-128,共7页
为确定城镇-森林交界域火灾灾害演化关系及风险特征,预防灾害事件发生,从157个火灾案例中提取43个典型灾害事件,运用灾害链和复杂网络理论,构建城镇-森林交界域火灾灾害链演化模型。使用Python工具对灾害链网络中关键节点、关键边和最... 为确定城镇-森林交界域火灾灾害演化关系及风险特征,预防灾害事件发生,从157个火灾案例中提取43个典型灾害事件,运用灾害链和复杂网络理论,构建城镇-森林交界域火灾灾害链演化模型。使用Python工具对灾害链网络中关键节点、关键边和最短路径分析。结果表明:化工厂爆炸、加油加气站爆炸、城镇火灾、污染水质、污染空气及城市生命线损毁是关键节点,山洪-道路损毁、河流泥沙淤积-山洪、堤坝决堤-山洪、堰塞湖-山洪、森林火灾-城镇火灾是关键边。研究结果可为城镇-森林交界域火灾的防控、断链减灾提供科学依据,具有较高的现实意义。 展开更多
关键词 城镇-森林交界域火灾 灾害链 复杂网络 风险分析
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基于层次分析法的某地区林业城镇棚户区消防风险评估 被引量:5
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作者 钟委 韩宁 +1 位作者 田英 王潇杰 《火灾科学》 CAS 北大核心 2021年第3期179-184,共6页
通过实地调研对某地区19个林业城镇的棚户区消防现状和存在的问题进行了评估。结合实测数据采用层次分析法对各城镇的棚户区火灾风险进行了评价,对风险指数进行等级划分,结果表明:此地区林业城镇棚户区60%处于高风险级,40%处于极高风险... 通过实地调研对某地区19个林业城镇的棚户区消防现状和存在的问题进行了评估。结合实测数据采用层次分析法对各城镇的棚户区火灾风险进行了评价,对风险指数进行等级划分,结果表明:此地区林业城镇棚户区60%处于高风险级,40%处于极高风险级。依据评价结果提出了减少火灾风险的建议和改进措施,降低城镇森林火灾发生的可能性。 展开更多
关键词 棚户区 城镇-森林交界域火灾 层次分析法 消防风险评估
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WUI fire risk mitigation in Europe:A performance-based design approach at home-owner level 被引量:1
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作者 Pascale Vacca David Caballero +1 位作者 Elsa Pastor Eulàlia Planas 《Journal of Safety Science and Resilience》 2020年第2期97-105,共9页
Fires at the Wildland-Urban Interface(WUI)are becoming increasingly hazardous for life safety and property protection.Guidelines and standards for fire practitioners are needed in order to help WUI communities face th... Fires at the Wildland-Urban Interface(WUI)are becoming increasingly hazardous for life safety and property protection.Guidelines and standards for fire practitioners are needed in order to help WUI communities face this threat and become fire-adapted.A performance-based design approach(PBD)is proposed to deal with the complex issues present at the WUI homeowner scale,which entails the use of Computational Fluid Dynamics(CFD)tools such as FDS in order to identify vulnerabilities in a quantitative manner.An analysis of recent European WUI fires is presented,along with the definition of several pattern scenarios that can be derived from these.Based on this analysis,examples of PBD fire scenarios specific for the Mediterranean WUI microscale are presented,involving glazing systems,roofing and gutters,external structures adjacent to the main building,and gaps present in the building envelope.A worked example to show the implementation of the proposed PBD method is provided in which the fire impact of residential fuel on a glazing system is quantitatively analysed. 展开更多
关键词 CFD simulation wildland-urban interface Vulnerability assessment House loss Design fire scenarios
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