Geomechanical Model Experiment Study on Deformation and Failure Mechanism of the Mountain Tunnel in Layered Jointed Rock Mass

Figure 7

Testing process: (a) preparation of finite elementary slabs, (b) construction of the model, (c) embedment of strain gauges, (d) preparation of speckles field, (e) debugging of strain acquisition system, and (f) debugging of noncontact monitoring instruments.

(a)

(b)

(c)

(d)

(e)

(f)