Sliding Impact Mechanism of Square Roadway Based on Complex Function Theory

Table 1

Model parameters in the FLAC^3D model.

Layers	Lithology	Thickness (m)	Elastic modulus (GPa)	Poisson ratio	Tensile strength (MPa)	Cohesion (MPa)	Internal friction angle(°)
Roof2	Fine sandstone	16	50.69	0.3	7.78	5	35
Roof1	Siltstone	4	21.37	0.3	2.92	5	35
Seam	Coal	7	17.04	0.37	0.74	3.1	28.5
Floor	Fine sandstone	23	19.68	0.3	4.99	5	35