Study on Overburden Rock Movement and Stress Distribution Characteristics under the Influence of a Normal Fault

Table 3

Model strata and mechanical parameters.

Lithology	Density (kg/m^3)	Bulk modulus (GPa)	Shear modulus (GPa)	Cohesion (MPa)	Tensile strength (MPa)	Friction angle (°)
Gritstone	2400	8.2	7.5	1.2	3.96	41
Siltstone	2530	13.4	7.6	1.4	1.85	37
Coal	1350	10.5	6.5	1.2	0.5	23
Packsand	2530	13.4	7.6	1.4	4.0	37
Mudstone	2340	9.8	7.1	0.5	3.0	39
Fault	2000	0.01	0.0035	0.001	0.2	5