Bearing Characteristics of Surrounding Rock of Deep Mining Roadway with Full and End Bolt Anchorages: A Comparative Numerical and Experimental Study

Figure 2

Bolt drawing test. (a) Grating force-measuring bolt. (b) Simulating surrounding rock block. (c) Bolt drawing test platform. (d) Fiber grating demodulator.

(a)

(b)

(c)

(d)