Investigation on Failure Characteristics of Coal Seam Floor in Paste Filling Working Face

Table 2

Physical and mechanical parameters of rock strata for numerical modelling.

Number	Rock type	Bulk modulus (GPa)	Shear modulus (GPa)	Internal friction angle (°)	Cohesion (MPa)	Tensile strength (MPa)	Density (kg/m^3)
27	Fine sandstone	1.20	0.87	38	7.41	0.64	2740
26	Siltstone	1.20	0.87	38	7.41	0.64	2740
25	Mudstone	0.35	0.21	35	4.53	0.20	2600
24	Fine sandstone	1.20	0.87	38	7.41	0.64	2740
23	Mudstone	0.35	0.21	35	4.53	0.20	2600
22	Siltstone	1.31	0.94	38	7.41	0.79	2740
21	Mudstone	0.39	0.24	35	4.53	0.24	2600
20	10 limestone	2.00	1.56	40	8.69	0.84	2740
19	16 coal seam	0.07	0.03	37	2.34	0.09	1600
18	Mudstone	0.30	0.18	35	4.53	0.14	2600
17	Fine sandstone	1.20	0.87	38	7.41	0.64	2680
16	Mudstone	0.35	0.21	35	4.53	0.20	2600
15	Coal seam	0.09	0.04	37	2.34	0.12	1600
14	Mudstone	0.35	0.21	35	4.53	0.20	2600
13	Siltstone	1.20	0.87	38	7.41	0.64	2740
12	Fine sandstone	1.20	0.87	38	7.41	0.64	2740
11	Mudstone	0.35	0.21	35	4.53	0.20	2600
10	Siltstone	1.20	0.87	38	7.41	0.64	2740
9	Mudstone	0.35	0.21	35	4.53	0.20	2600
8	Siltstone	1.20	0.87	38	7.41	0.64	2740
7	12 limestone	1.68	1.31	40	8.69	0.57	2780
6	Mudstone	0.35	0.21	35	4.53	0.20	2600
5	13 limestone	1.68	1.31	40	8.69	0.57	2780
4	Variegated mudstone	0.37	0.21	35	4.48	0.16	2600
3	Sandstone	1.20	0.87	38	7.41	0.64	2740
2	Mudstone	0.35	0.21	35	4.53	0.20	2600
1	Ordovician limestone	1.68	1.31	40	8.69	0.57	2780