摘要
新奥法施工的核心思想是把隧道围岩和支护结构作为一个完整的支护体系来考虑,监控量测是新奥法施工不可缺少的环节.以奉(节)巫(溪)高速公路孙家崖隧道为工程背景,基于该隧道浅埋、偏压、隧道洞口段穿越滑坡体等工程特点,通过现场监测隧道内围岩变形和围岩应力,结合左右线施工方法分析得出,该隧道左右线围岩的变形规律;围岩压力的分布规律;围岩变形与压力的关系;隧道与滑坡体之间的相对稳定关系.研究过程为该隧道的信息化施工提供了保证,同时研究成果也可为设计和分析研究其它同类工程提供参考.
The core idea of New Austrian Tunneling Method （NATM）considers tunnel surround-ing rock and supporting structure as a whole supporting system,and the monitoring measurement is the indispensable part of NATM.By taking Sunjiaya Tunnel on Feng-Wu Expressway as an ex-ample and monitoring the deformation and stress of surrounding rock,the excavation method is combined to obtain the deformation law of surrounding rock on left and right line,the distribution rule of surrounding rock stress,the relationship between deformation and stress of surrounding rock,and the relative stable relationship between the tunnel and landslide based on the character-istics of shallow,bias and tunnel passing through the landslide.The research process provides the information guarantee for tunnel construction,and the useful conclusions provide reference for studying similar proj ects.
出处
《兰州交通大学学报》
CAS
2014年第4期98-104,共7页
Journal of Lanzhou Jiaotong University
关键词
滑坡地段
隧道
变形机制
受力特征
landslide section
tunnel
deformation mechanism
mechanics characteristic
