Tunnel surrounding rock deformation monitor is an important method for holding information of surrounding rock and controlling tunnel stability in the period of construction.
隧道施工过程中的围岩变形监测是掌握围岩的动态信息、确保施工期间隧道稳定性的重要手段。
2
In this paper we analyze these data and find that the deformation wave of long period comes from pre-movement before a strong earthquake.
本文就此进行了初步分析，认为强震前的预滑移可能产生这种长周期的形变波，它们对大震预报有一定意义。
3
In the late period, brittle rupture structures inherited and were superimposed on the early deformation fabrics.