基于复杂网络的隧道施工塌方风险演化研究  

Research on evolution of collapse risk in tunnel construction based on complex network

作　　者：陈赟[1] 李倩 CHEN Yun;LI Qian(School of Traffic and Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学交通运输工程学院,湖南长沙410114

出　　处：《长沙理工大学学报（自然科学版）》2022年第2期129-137,共9页Journal of Changsha University of Science and Technology:Natural Science

基　　金：湖南省应急管理厅安全生产科技研究及推广项目(201801)。

摘　　要：【目的】探究隧道施工塌方风险演化路径及规律,为预防塌方事故、保障施工安全提供理论支撑。【方法】基于事故案例分析法,根据事故报告和相关文献确定风险因素,并提取出302条事故链;基于复杂网络理论,通过风险演化网络的拓扑特性指标对网络节点的重要度、连接性和演化性进行分析,确定关键风险因素并提出具有针对性的对策。【结果】支护不及时、施工方案不合理、围岩失稳和不良地质条件等是风险控制的关键点。风险演化网络的平均路径长度为2.18,聚类系数为0.147。【结论】各风险因素只需经过2~3步即可演化成塌方事故。大部分风险因素之间相互影响程度较低,但具有明显的演化关系。[Purposes]The paper aims to explore the evolution path and the law of collapse risk in tunnel construction,and provide theoretical support for preventing collapse accidents and ensuring construction safety.[Methods]Based on accident case analysis method,risk factors were identified from accident reports and related literatures,and 302accident chains were extracted;Based on complex network theory,the importance,connectivity and evolution of network nodes were analyzed through the topological characteristic indexes of risk evolution network,key risk factors were determined and targeted countermeasures were proposed.[Findings]Untimely support,unreasonable construction plan,instability of surrounding rock and poor geological condition are the key points of risk control.The average path length of the network is 2.18,and the clustering coefficient is 0.147.[Conclusions]Each risk factor can evolve into a collapse accident after only 2to 3steps.Most of the risk factors have a low degree of interaction,but there is an obvious evolutionary relationship.

关 键 词：隧道施工 塌方 复杂网络 风险演化 风险因素 

分 类 号：TU714[建筑科学—建筑技术科学]