Model of Overlying Strata Structure in Large Mining Height Excavating Condition and Calculation of Support Working Resistance

Table 3

The physical and mechanical property parameters of the numerical simulation experimental model coal.

Serial number	Lithologic characters	Thickness/m	Bulk density(kg/m^3)	Volume modulus (GPa)	Shear modulus (GPa)	Internal friction angle/°	Cohesion (MPa)	Tensile strength (MPa)
15	Grit stone	20.0	2580	8.4	3.72	37	8.27	6.22
14	Fine sandstone	13.4	2580	7.1	2.91	37	5.45	4.06
13	Moderate coarse sandstone	3.8	2580	9.4	6.76	40	6.63	5.27
12	Grit stone	5.4	2580	8.4	3.72	37	8.27	6.22
11	Fine sandstone	11.4	2580	7.1	2.91	37	5.45	4.06
10	Coal seam	1.22	1400	7.22	1.8	28	2.82	3.13
9	Sandy shale	5.22	2420	4.2	2.91	35	4.52	2.47
8	Coal seam	0.96	1400	7.2	1.8	28	2.82	3.13
7	Sandy shale	5.21	2420	4.2	2.91	35	4.52	2.47
6	Fine sandstone	1.60	2580	7.1	2.91	37	5.45	4.06
5	Sandy shale	3.10	2420	4.2	2.91	35	4.52	2.47
4	Medium sandstone	9.20	2580	9.6	4.7	32	7.20	5.21
3	Grit stone	9.00	2580	8.4	3.72	37	8.27	6.22
2	Fine sandstone	2.30	2580	7.1	2.91	37	5.45	4.06
1	Sandy shale	0.90	2420	4.2	2.91	35	4.52	2.47
	Coal seam	5.70	1400	7.2	1.8	28	2.82	3.13