Failure Mechanism and Control Technology for a Large-Section Roadway under Weakly Cemented Formation Condition

Figure 11

Maximum principal stress distribution in surrounding rocks of the roadway after model operation for different steps. (a) 500 steps. (b) 1,000 steps. (c) 2,500 steps. (d) 10,000 steps.

(a)

(b)

(c)

(d)