Modeling Rock Fracture Propagation and Water Inrush Mechanisms in Underground Coal Mine

Figure 11

Comparison of the differential stresses in the coal pillar and floor for cycle 14. (a) The vertical axis is the normal stress in the direction on monitoring lines Lv1~4 in the coal pillar, and the horizontal axis is the distance in the -coordinate direction. (b) The vertical axis is the normal stress in the direction on monitoring lines Lh1~4 in the floor, and the horizontal axis is the distance in the -coordinate direction.

(a)

(b)