Study on Deformation Response Law of Surrounding Rock in Solid Backfill Mining Stope

Table 1

Simulated physical and mechanical parameters of coal seams.

Rocks name	Weight density d (N/m^3)	Young’s modulus E (GPa)	Poisson ratio (v)	Cohesion (MPa)	Friction (°)	Tensile strength (MPa)
Siltstone	24,600	19.5	0.2	2.75	38	1.84
Argillaceous sandstone	25,200	5.425	0.147	2.16	36	0.75
Mudstone	24,610	8.75	0.26	1.2	30	0.605
Coal	13,800	5.3	0.32	0.15	32	1.25
Solid backfill body	13,500	2.0	0.2	0.015	20	0.7