Comparative Study of the Excavation Damage and Rockburst of the Deeply Buried Jinping II Diversion Tunnels Using a TBM and the Drilling-Blasting Method

<div>Construction design drawing of Jinping II diversion tunnels: (a) excavation sections of the diversion tunnel by the TBM or drilling-blasting method, (b) typical cross section of the diversion tunnel excavated by the TBM, and (c) typical cross section of the diversion tunnel excavated by drilling and blasting.</div>

Advances in Civil Engineering

fig3

Figure 3

Figure 3: Comparative Study of the Excavation Damage and Rockburst of the Deeply Buried Jinping II Diversion Tunnels Using a TBM and the Drilling-Blasting Method 

Figure 3 | Comparative Study of the Excavation Damage and Rockburst of the Deeply Buried Jinping II Diversion Tunnels Using a TBM and the Drilling-Blasting Method 