Model Construction and Parameters Acquisition of the Predicted Surface Movement Deformation under Thick Loose Layer Mining Area

<div>Comparison of the stability of the last 4 parameters of the hyperbolic secant model: (a) inflection point offset distance S2; (b) inflection point offset distance S3; (c) inflection points offset distance S4; (d) mining influence propagation angle θ.</div>

Mathematical Problems in Engineering

fig12

Figure 12

Figure 12: Model Construction and Parameters Acquisition of the Predicted Surface Movement Deformation under Thick Loose Layer Mining Area 