The Principle of Invariant Stress of the Surrounding Rock of the Hole under the Condition of Equal Pressure in the Deep Rock Mass

Figure 3

Plastic area of the surrounding rock of the hole in the mudstone and its influence range: (a) H = 100 m; (b) H = 1000 m; (c) H = 2000 m; (d) H = 3000 m; (e) H = 4000 m; (f) H = 4500 m.

(a)

(b)

(c)

(d)

(e)

(f)