Prediction Method for the Ground Vibration Damage Boundary of Thick and Hard Rock Layer Fracture Type Mine Quakes

Figure 4

Schematic diagram of energy analysis in the mine quake of thick and hard rock layer type fracture. (a) Spatial structure of thick and hard rock layer in stope; (b) Structural rock mass and fracture section scale; (c) Stress characteristics of fixed support end in the thick and hard rock layer.

(a)

(b)

(c)