摘要
在深埋隧道施工过程中,需对隧道中穿越的软弱地层进行围岩变形实时监测,掌握围岩变形规律,及时对支护参数进行调整,以保证隧道施工快速安全有效地进行。本文选取某在建隧道软弱泥灰岩断面围岩两帮收敛变形、拱顶下沉、围岩内部位移等关键参数进行实时监测并分析对比,得出该地层围岩变形基本特征,判定出围岩松动圈范围,为类似地层隧道施工提供参考依据。
In the process of deep buried tunnel construction, need to take real-time monitoring on surrounding rock deformation of the soft and weak strata, and master surrounding rock deformation rule and to adjust support parameters in time so that to ensure safe, efficiently, rapidly construction. This paper monitor and analysis the convergence deformation, vault sinking~ internal displacement of surrounding rock, obtain the basic characteristics of the deformation of surrotmding rock formations, determine the scope of the rock loose circle, the results provide reference for similar formations tunnel construction.
出处
《中国科技信息》
2014年第8期60-62,共3页
China Science and Technology Information
关键词
软弱围岩
表面收敛
拱顶下沉
多点位移
soft and weak surrounding rock
surface convergence
vault sinking
multi-pointdisplacement
