公路隧道垂直充填型溶洞冒顶塌方处治与灾变影响因子分析  

Highway Tunnel Vertical Filling Type Cave Roof Caving and the Treatment of Catastrophic Impact Factor Analysis

作　　者：刘定清 谢沃 贾艳领 Liu Dingqing;Xie Wo;Jia Yanling(Guangxi Zhuang Autonomous Region Expressway Development Center,Nanning 530007,Guangxi,China;Guangxi Zhuang Autonomous Region Highway Tunnel Safety Early Warning Engineering Research Center,Nanning 530007,Guangxi,China;Guangxi Transportation Science And Technology Group Co.,Ltd.,Nanning 530007,Guangxi,China)

机构地区：[1]广西壮族自治区高速公路发展中心,广西南宁530007 [2]广西壮族自治区公路隧道安全预警工程研究中心,广西南宁530007 [3]广西交科集团有限公司,广西南宁530007

出　　处：《岩土工程技术》2023年第4期422-427,共6页Geotechnical Engineering Technique

摘　　要：以广西区内某高速公路隧道溶洞塌方冒顶案例为依托,根据岩溶灾害针对性处治设计,采用有限元软件模拟推演处治效果,获得了隧道穿越垂直发育充填型溶洞的变形规律。在此基础上,运用控制变量法研究了管棚支护、初支厚度、地质特性三大灾变控制影响因子,分析各因子对隧道结构稳定性影响规律。工程处治效果、模型计算结果、监控量测结果表明灾变处治方案设计合理、安全、可靠。相关研究成果对类似岩溶发育隧道工程设计施工有一定借鉴意义。Based on a highway tunnel in the area in guangxi karst cave roof collapse case,according to the treatment design of karst disaster,the finite element software was used to simulate the treatment effect,and the deformation law of the vertical developed filling cave with tunnel crossing was obtained.On this basis,in order to prove the effectiveness and rationality of the disaster treatment scheme design,the three major disaster control factors of pipe shed support,initial support thickness and geological characteristics were studied by using the control variable method,and the influence of each factor on the stability of the tunnel structure was analyzed.The engineering treatment effect,model calculation result and monitoring measurement result prove that the design of disaster treatment scheme is reasonable,safe and reliable.The relevant research results have certain reference significance for the design and construction of similar karst tunnel engineering.

关 键 词：公路隧道 垂直充填型溶洞 灾变影响因子 处治设计 数值模拟 

分 类 号：U455[建筑科学—桥梁与隧道工程]