Grouting Reinforcement Mechanism and Multimodel Simulation Analysis of Longwall Goaf

Figure 5

Displacement stress distribution diagram of goaf without grouting.

(a) Settlement deformation when the goaf is untreated (mm)

(b) Horizontal displacement change when the goaf is untreated (mm)

(c) The vertical stress when the goaf is untreated (MPa)

(d) The horizontal stress when the goaf is untreated (MPa)