Numerical Simulation Study on the Distribution Law of Deviatoric Stress of Floor under the Influence of Mining

Table 3

Rock mechanical parameters selected by the model.

Name of rock	Rock thickness	Cumulative buried depth	/kg•m^-3	/GPa	/GPa	/(°)	/MPa	/MPa
15 the FGER	—	700	2500	10.44	4.54	28	5.36	2.60
14 basic roof			2500	7.60	6.50	35	13	4.5
13 basic roof	20 m	720	2500	7.60	6.50	35	13	4.5
12 fine-grained sandstone	7 m	727	2500	7.60	6.50	35	13	4.5
11 Dazhan sandstone	5.8 m	732.8	2700	10.20	9.00	38	16	7.5
10 sandy mudstone	6 m	738.8	2500	10.44	4.54	28	5.36	2.60
9 mudstone	0.8 m	739.6	2200	8.82	5.04	30	5.24	1.48
8 2-1 coal	6.2 m	745.8	1500	5.4	4.8	25	2.8	1.5
7 mudstone	7.5 m	753.3	2200	8.82	5.04	30	3.24	1.48
6 sandy mudstone	7.5 m	760.8	2500	10.44	4.54	28	5.36	2.60
5 L9 limestone	2 m	762.8	2700	12.6	8.3	40	10	8.71
4 mudstone	5.2 m	867.0	2200	8.82	5.04	30	3.24	1.48
3 sandy mudstone	5.3 m	773.3	2500	10.44	4.54	28	5.36	2.60
2 L8 limestone	10 m	783.3	2700	12.6	8.3	40	10	8.71
1 basic bottom	70 m	853.3	2700	12.6	8.3	40	10	8.71
Goaf	—	—	2500	19.9	1	30	0.001	0