摘要
隧道施工与地质条件紧密结合,在隧道施工过程中经常出现塌方事故,隧道塌方的特点及处理方案与地层条件密切相关,不同地层的塌方特点不同,处理措施亦不相同.如果对不同地层的塌方特点不了解,处理措施采取不当,极有可能造成人员伤亡.以南庄岭隧道为背景,分析研究了硬质岩地层塌方的特点及原因,提出采取“回填加固、超前支护、加强结构、三台阶法”的处理原则,并结合本工程的实际情况,制定了有针对性的处理方案,通过现场施工,验证了方案的可实施性,总结了处理硬质岩地层塌方的有效措施.
Collapse accidents often Occur in the process of tunnel construction due to geological conditions.The characteristics and treatment schemes of tunnel collapse are closely related to stratum conditions.different strata have different characteristics of collapse and treatment measures are also different.If we do not understand the characteristics of landslides in different strata and take improper treatment measures,it is very likely to cause casualties.Taking Nanzhuangling Tunnel as the background,the characteristics and causes of coHapse in hard rock stratum are analyzed and studied.The treatment principle of“backfiHing reinforcement。advance support,strengthening structure and three·step method”is proposed.Combined with the actual situation of this project,a targeted treatment scheme is formulated.Through field construction,the feasibility of the scheme is verified,and the effective measures of collapse in hard rock stratum is summarized.
作者
陈德健
刘宇
Chen Dejian;Liu Yu(China Railway Fifth Survey and Design Institute Group Co.Ltd.,Beijing 102600,China)
出处
《铁道建筑技术》
2019年第S02期147-150,共4页
Railway Construction Technology
基金
中铁第五勘察设计院集团有限公司科技研究开发计划项目(T5Y2016-D02).
关键词
硬质岩地层
隧道
塌方
变形
处理
tunnel with hard rock
tunnel
collapse
deformation
treatment
