摘要
根据坍塌事故案例的特征,提出隧道坍塌分类的8个依据,分别为隧道类型、坍塌的原因、发生位置、发展速度、规模、破坏形态和危害形式、造成的经济损失与人员伤亡以及时效性。基于每个依据将隧道坍塌事故划分为:山岭、城市和水下的隧道坍塌;围岩失稳、支护强度不足引起的隧道坍塌;洞口、洞身的隧道坍塌;突发性、阵发性、缓慢变形的隧道坍塌;小型、中型和大型的隧道坍塌;局部、拱形、异形和贯穿型的隧道坍塌;一般、较大、重大和特别重大的隧道坍塌;初期支护前、二次支护完成前和二次支护后的隧道坍塌。在此基础上,重点分析隧道坍塌事故主要类型的典型特征及产生原因。根据分类结果,可以对坍塌事故的发生机理、可能造成的危害等进行研究,从而为隧道风险预测、施工技术和支护措施等提供理论支持。
According to the characteristics of the collected collapse accidents,eight factors for classifying tunnel collapse are proposed,i.e.tunnel type,the causes of collapses,location of the collapses in the tunnel,developing speed of collapses,length and volume scale,forms of destruction and harm,economic loss and casualties,and aging characteristics of collapses.On the basis of each factor,tunnel collapse accidents are classified as mountain,city and submerged tunnel collapses;tunnel collapses caused by the instability of surrounding rock or insufficient supporting intensity;tunnel portal or tunnel trunk collapses;sudden,intermittent or slow deformation collapses;minor,medium-size or large-scale tunnel collapses;local,arch,irregular and penetration tunnel collapses;general,large,very large and extremely large tunnel collapses;tunnel collapses before primary support,tunnel collapses before or after secondary support.On this basis,the typical characteristics and causes of the main types of tunnel collapses are emphatically analyzed.With the classification results,the occurrence mechanism of collapse accidents and possible hazards can be researched,so as to provide theoretical support for tunnel risk prediction,construction technology and supporting measures.
作者
孙景来
刘保国
储昭飞
任大瑞
宋宇
SUN Jinglai;LIU Baoguo;CHU Zhaofei;REN Darui;SONG Yu(School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2018年第6期44-51,共8页
China Railway Science
基金
国家自然科学基金资助项目(71771020
71631007)
关键词
隧道坍塌
事故类型
划分依据
类型划分
事故特征
围岩失稳
Tunnel collapse
Accident type
Division basis
Type division
Accident characteristics
Surrounding rock instability
作者简介
第一作者:孙景来(1983-),男,山东临朐人,助理研究员,博士研究生。E-mail:sunjinglai83@163.com;通讯作者:刘保国(1964-),男,河北阜平人,教授,博士研究生导师,博士。E-mail:bgliu6767@gmail.com.
