The Mechanical and Fracturing of Rockburst in Tunnel and Its Acoustic Emission Characteristics

Figure 2

The experimental setup ((a) the experimental system; (b) the RLW-3000 biaxial loading system; (c) acoustic emission monitoring system of PCI-2; (d) acquisition card; (e) preamplifier; (f) sensor).

(a)

(b)

(c)

(d)

(e)

(f)