摘要
为了预防在高地应力的作用下,软弱围岩产生挤压变形,引发侵限、坍塌等病害,将三角模糊层次分析法(triangular fuzzy-analytic hierachy process, TFAHP)和可拓评价结合,从围岩岩性、地质构造、水文条件和施工方法4个方面讨论隧道大变形的影响因素,构建大变形风险评价指标体系,使用Matlab软件计算关联度,基于最大关联度识别法对施工前隧道大变形风险进行评估,并选取某公路隧道项目进行实证研究。研究结果表明:运用该模型得到某公路隧道大变形风险安全等级为Ⅱ级,比较安全,与现场实际情况较为符合,基于TFAHP-可拓法的评估方法具有合理性和适用性。研究结果对隧道大变形风险等级判断及指导施工具有一定现实意义。
In order to prevent the extrusion deformation of soft surrounding rock under the action of high ground stress,which will cause the diseases such as invasion and collapse,the triangular fuzzy-analytic hierarchy process(TFAHP)method was combined with extension evaluation method to discuss the factors affecting the large deformation of tunnel from four aspects of surrounding rock lithology,geological structure,hydrological conditions and construction methods,and an index system of large deformation risk assessment was constructed.The Matlab software was used to calculate the correlation degree,then the large deformation risk of tunnel before construction was assessed on the basis of maximum correlation degree identification method,and a highway tunnel project was selected for empirical research.The results show that the safety level of large deformation risk of this tunnel obtained by this model is level II,which is relatively safe,so the assessment method based on TFAHP and extension method is reasonable and applicable.The research results have certain practical significance for judging the risk level of large deformation of tunnel and guiding the construction.
作者
张航
胡建菁
吕能超
ZHANG Hang;HU Jianjing;LYU Nengchao(School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan Hubei 430063,China;Intelligent Transport Systems Center,Wuhan University of Technology,Wuhan Hubei 430063,China)
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2023年第10期21-28,共8页
Journal of Safety Science and Technology
基金
国家自然科学基金项目(52072290)。
关键词
公路隧道
大变形
风险评估
层次分析法
物元可拓法
highway tunnel
large deformation
risk assessment
analytic hierarchy process(AHP)
matter-element extension method
risk assessment
