摘要
隧道采用新奥法原理施工时,利用围岩周边变形和拱顶下沉量的观测值可对隧道周边岩体内的应力动态过程及发展趋势、围岩稳定性以及支护的合理性进行监控,这对安全施工及保证工程质量具有重要作用。通过对崇遵高速公路风梅垭隧道的实时监控,研究了隧道围岩的稳定状况,实时确定了合理的二次衬砌施工时间,成功避免了施工中重大事故的发生,确保了隧道施工安全和质量,对隧道施工具有指导意义。
It is important that monitor measuring is applied in tunnel in regard to NATM. The monitor measuring of NATM was studied in the Fengmeiya Tunnel in Chongzun Express. Based on the regularity and conditions of the surrounding rock deformation of monitor measuring in site, the optimum time for primary and permanent support are obtained which averting successfully accidents in construction, enhancing the construction qualities and guidance to tunnel construction in Karst areas.
出处
《重庆大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2004年第2期132-135,166,共5页
Journal of Chongqing University
基金
高等学校重点实验室访问学者基金资助
中国博士后科学基金资助项目
关键词
公路隧道
量测
监控
预警值
highway tunnel
measuring
monitor
threshold