Ground Response and Mining-Induced Stress in Longwall Panel of a Kilometer-Deep Coal Mine

Figure 11

Stress rotation along the monitoring line. (a) Difference between the major principal and vertical stresses. (b) Rotation trace of the major principal stress. (c) Difference between the minor principal and x-axial stresses. (d) Rotation trace of the minor principal stress.

(a)

(b)

(c)

(d)