Study on the Generation Mechanism and Development Law of the Zonal Disintegration in Deep Burial Tunnels

Figure 13

Failure and principal stress at different calculation steps. (a) Fractured zone (25000 steps). (b) Maximum principal stress (25000 steps). (c) Minimum principal stress (25000 steps). (d) Fractured zone (35000 steps). (e) Maximum principal stress (35000 steps). (f) Minimum principal stress (35000 steps). (g) Fractured zone (45000 steps). (h) Maximum principal stress (45000 steps). (i) Minimum principal stress (45000 steps). (j) Fractured zone (55000 steps). (k) Maximum principal stress (55000 steps). (m) Minimum principal stress (55000 steps). (n) Fractured zone (66000 steps). (o) Maximum principal stress (66000 steps). (p) Minimum principal stress (66000 steps). (q) Fractured zone (75000 steps). (r) Maximum principal stress (75000 steps). (s) Minimum principal stress (75000 steps).

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