Distribution and Variation of Mining-Induced Stress in the Reverse Fault-Affected Coal Body

Table 1

Rock mechanics parameters of 1503 working face in Xinchun coal mine.

Lithology	Thickness (m)	Density (kg·m^3)	Elastic modulus (GPa)	Poisson’s ratio	Bulk modulus (GPa)	Shear modulus (GPa)	Cohesion (MPa)	Tensile strength (MPa)	Internal friction angle (°)
Sandstone	49	2540	17.55	0.24	14.7	8.1	10.0	11.55	26
Sandy mudstone	12	2600	15.45	0.27	10.5	7.1	1.7	2.30	30
Coal	2	1350	3.53	0.33	10.5	6.5	1.2	0.90	23
Mudstone	8	2340	4.92	0.35	9.8	7.1	0.5	1.55	39
Silty mudstone	15	2530	7.33	0.31	10.4	7.3	0.7	1.65	38
Siltstone	17	2580	10.23	0.31	13.4	7.6	1.4	1.85	37
Fault	2	2000	1.10	0.12	4.1	1.3	0.4	0.2	5