摘要
基于可拓学理论,利用关联函数法确定指标权重,建立了大跨径隧道塌方风险评估模型,并构建了相应的指标体系和评估标准。避免了传统的风险评估方法在确定权重过程中由于主观因素产生的评估误差,提高了运用可拓理论进行大跨径隧道塌方风险评估的准确性和可靠性。成功地运用该方法对石人子沟隧道进行了风险评估实践和施工指导,避免了隧道塌方灾害的发生。根据现场监控测量信息反馈,证明该方法对大跨径隧道塌方风险的评估是可靠的。所建模型可为规避大跨径隧道施工过程中的塌方风险作出超前预报提供参考。
Based on the theory of Extenics,a new risk evaluation model for large- span tunnel was established.Moreover,the index weights of evaluation were determined using correlation function method. The errors of traditional evaluation method due to subjective factors in the process to determine the weights are avoided by using this new model. And by the use of hierarchy- extension theory to large- span tunnel collapse risk evaluation,the accuracy and reliability of analysis are all improved. This method was successfully applied to the practical risk assessment of Shirenzigou Tunnel. It was used to be a guidance for the subsequent construction,and the tunnel collapse disasters are avoided. According to the feedback of information obtained by field monitoring measurement,it is proved that using this method to evaluate large- span tunnel collapse risk is reliable. The established model provides a reference for the advanced forecasting large- span tunnel collapse risk in the engineering construction.
出处
《自然灾害学报》
CSCD
北大核心
2015年第3期97-103,共7页
Journal of Natural Disasters
基金
国家林业局948项目(2012-4-76)
国家自然科学基金项目(31270671)
湖南省自然科学基金资助项目(12JJ5015)
湖南省自然科学基金资助项目(11JJ5036)
湖南省外国专家局资助项目(湘财教指[2012]26号)
关键词
可拓理论
关联函数法
大跨径隧道
塌方灾害
风险评估
extension theory
correlation function method
large-span tunnel
collapse disaster
risk evaluation
