基于节点重要度的深层地下空间亚安全区选址研究  

Research on the Site Selection of Sub-safety Zones in Deep Underground Spaces Based on Node Importance

作　　者：蒋辰瑜 李超[1] 杨瑞航 周铁军[1,2] JIANG Chenyu;LI Chao;YANG Ruihang;ZHOU Tiejun(School of Architecture and Urban Planning,Chongqing University,Chongqing 400045,China;Key Laboratory of New Technology for Construction of Cities in Mountain Area,Chongqing 400045,China)

机构地区：[1]重庆大学建筑城规学院,重庆400045 [2]山地城镇建设与新技术教育部重点实验室,重庆400045

出　　处：《灾害学》2025年第1期174-179,共6页Journal of Catastrophology

基　　金：国家自然科学基金面上项目“亚安全区导向的多层级深层地下空间立体疏散网络设计研究”(52278005)。

摘　　要：为防范化解深层地下疏散面临的安全风险,引入亚安全区的概念,在深地设置具有安全保障和疏散缓冲功能的临时避难场所。将深层地下空间模型抽象为拓扑网络,对各网络节点的节点重要度进行计算,进而基于深地疏散特征和节点重要度排序结果,确立亚安全区选址及分级依据。结果表明,与地面直接相接的一级垂直疏散体底部是重要的疏散节点,应选定为一级亚安全区;节点重要度排序前7.0%的节点多为水平疏散通道相互交接处的楼梯间前室,选定为二级亚安全区;节点重要度排序7.0%~18.4%的节点多为硐室内部楼梯间前室,选定为三级亚安全区。该文提出的深地亚安全区选址能有效保障深层地下空间人员的疏散安全,为建立地下空间安全疏散体系提供理论依据和技术支撑。To mitigate and address the safety risks associated with deep underground evacuations,the concept of sub-safety zone is introduced,establishing temporary shelters equipped with safety features and evacuation buffering func⁃tions in deep underground space.By abstracting the deep underground space model into a topological network and calculating the importance of each network node and based on the characteristics of deep subsurface evacuations and the results of node importance ranking,the criteria for selecting and grading sub-safety zones are established.The findings indicate that the bottom of the primary vertical evacuation structure directly connected to the surface serves as an important evacuation node and should be designated as a primary sub-safety zone;nodes ranked in the top 7.0%in terms of importance are mostly located at the intersections of horizontal evacuation channels in the stairwell front room,designated as secondary sub-safety zones;nodes ranked between 7.0%and 18.4%in importance are mostly located in the stairwell front room within the tunnel,designated as third-level sub-safety zones.The proposed location selection of deep sub-safety zones can effectively ensure the evacuation safety of crowds in deep underground spaces,providing theoretical foundation and technical support for establishing a safe evacuation system for underground spaces.

关 键 词：深层地下空间 亚安全区 节点重要度 拓扑网络 选址 

分 类 号：X43[环境科学与工程—灾害防治] TU92[建筑科学—建筑设计及理论] X915.5