首页|水网结构对多灾害情景的韧性响应研究

水网结构对多灾害情景的韧性响应研究

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通过识别基础设施系统内部重要节点以提高基础设施韧性,对增强城市韧性具有重要意义.水网作为基础设施的重要组成部分,对水资源统筹调配与水旱灾害防控等发挥着重要作用.基于复杂网络理论,构建水网网络拓扑结构,计算水网各节点参数与灾害风险度,采用不同节点攻击策略,使用随机攻击、蓄意攻击和自然灾害 3 种攻击方式,得到整体网络效率与最大连通子图大小,对水网韧性进行分析.研究结果表明:水网结构遭到随机攻击或自然灾害时,破坏节点达 80%左右,水网韧性趋近于 0;水网结构遭到蓄意攻击时,破坏节点达 50%左右,水网结构系统崩溃;在蓄意攻击中,PageRank攻击对水网韧性影响较大;在自然灾害攻击中,水网结构在面对暴雨洪涝时表现出较强的韧性.在网络拓扑结构研究水平的基础上,在工程真实物理状态下对水网结构遭到随机攻击、蓄意攻击与自然灾害后的水网韧性进行了更全面的分析与评价,为水网工程建设与管理研究提供参考.
Research on the Resilience Response of Water Network Structure to Multiple Disaster Scenarios
It is of great significance to improve the resilience of infrastructure by identifying important nodes within the in-frastructure system.As an important part of the infrastructure,the water network plays an important role in the coordinated allocation of water resources and the prevention and control of drought and flood disasters.Based on the complex network theory,this paper constructs the network topology of the water network and calculates the parameters of each node of the wa-ter network with the disaster risk degree.Different node attack strategies are applied to analyze the resilience of the water network by using three types of attacks,namely random attacks,deliberate attacks and natural disasters,to obtain the over-all network efficiency and the maximum connectivity subgraph size.The results of the study of a large water network in a certain place show that when the water network structure is subjected to random attacks and natural disasters,about 80%of the nodes are destroyed,and the network toughness tends to be close to zero.In contrast,when the water network structure is deliberately attacked,about 50%of the nodes are destroyed and the water network structure system collapses.Among the deliberate attacks,PageRank attacks have a greater impact on water network resilience.In natural disaster attacks,water network structures show greater resilience in the face of heavy rainfall and flooding.Based on the research level of network topology,this paper considers the real physical state of the project to analyze and evaluate the resilience of the water net-work after random attacks,deliberate attacks and natural disasters,so as to provide a reference for the research on the con-struction and management of water network projects.

complex networksresiliencewater network structurenode attacks

李锋、张鹏超、李慧敏、张文娟

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华北水利水电大学,河南 郑州 450046

复杂网络 韧性 水网结构 节点攻击

国家自然科学基金项目河南省重点研发与推广专项(科技攻关)

72271091GG202259

2024

华北水利水电大学学报(自然科学版)
华北水利水电大学

华北水利水电大学学报(自然科学版)

CSTPCD北大核心
影响因子:0.558
ISSN:1002-5634
年,卷(期):2024.45(1)
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