Fig. 5
From: The disaster law and control measures of high-stress tunnels in fault areas: a case study
The excavation for four step model construction. (a) Schematic of excavation plan, (Made by SolidWorks 2015) https://help.solidworks.com/2015/chinese/solidworks/install_guide/t_initiating_sw_installation.htm, (b) Four step excavation site photos.
