Stability Control Mechanism of High-Stress Roadway Surrounding Rock by Roof Fracturing and Rock Mass Filling

Table 3

Comparisons of the target and simulated elasticity modulus and compressive strengths.

Lithology	Em (GPa)			Compressive strength (MPa)
	Target	Simulated	Error (%)	Target	Simulated	Error (%)
Fine sandstone	8.3	8.4	1	43.5	43.4	0.2
Sandy mudstone	4.1	4.2	2	19.5	19.6	0.5
Siltstone	5.5	5.4	2	32.8	32.6	0.6
Mudstone	2.3	2.3	0	7.6	7.5	1
Coal seam	0.4	0.4	0	4.1	4.2	2