Dynamic Response Analysis of Roadway Surrounding Rock Induced by Dynamic Load under the Action of Hard and Thick Rock Stratum

Table 4

Dynamic response of roadway surrounding rock with different focal height under one side goaf condition.

Seismic focus height			Dynamic response
			Peak value of vertical stress/MPa	Peak value of horizontal stress/MPa	Deformation of surrounding rock/mm	Deformation velocity/m/s	Deformation acceleration/m/s^2
116 m	Solid coal roadway	Outer side	13.76	4.26	18.16	1.32	386.27
		Inner side	19.18	7.06	24.54	1.47	1107.63
		Roof	6.67	21.52	9.63	1.25	236.96
		Floor	2.11	6.33	0.61	0.21	191.03
	Gob-side roadway	Outer side	23.2	8.44	250.53	2.11	369.69
		Inner side	12.34	3.02	139.58	2.43	469.23
		Roof	8.87	55.28	91.81	0.91	248.38
		Floor	3.14	7.83	0.2	0.17	110.65
90 m	Solid coal roadway	Outer side	13.64	4.43	33.79	0.94	499.36
		Inner side	19.37	7.59	46.61	1.6	1137.5
		Roof	10.97	29.08	20.45	1.3	322.88
		Floor	2.52	6.8	1.12	0.29	234.14
	Gob-side roadway	Outer side	24.04	9.67	283.65	2.26	464.1
		Inner side	12.56	3.84	198.58	2.57	461.93
		Roof	8.75	61.35	130.89	1.09	376.37
		Floor	3.52	9.04	0.6	0.33	253.52
70 m	Solid coal roadway	Outer side	13.57	4.47	28.5	1.1	602.05
		Inner side	19.52	7.58	49.05	2.12	1245.01
		Roof	7.41	44.92	14.05	1.45	333.4
		Floor	2.25	6.89	0.96	0.25	207.75
	Gob-side roadway	Outer side	24.44	9.41	348.63	2.72	543.54
		Inner side	12.19	3.65	187.39	2.11	738.51
		Roof	9.6	62.03	148.54	1.32	437.73
		Floor	3.64	9.19	0.61	0.22	161.47
50 m	Solid coal roadway	Outer side	14.31	4.97	47.37	2.27	768.42
		Inner side	20.06	7.5	96.42	2.63	1466.62
		Roof	6.82	49.01	16.37	1.62	573.02
		Floor	3.29	7.71	1.55	0.56	401.76
	Gob-side roadway	Outer side	24.84	9.91	471.88	3.29	861.36
		Inner side	12.86	4.03	257.16	3.29	1323.45
		Roof	9.13	63.11	176.67	1.73	564.41
		Floor	4.05	10.28	0.92	0.48	407.03