The Relationship between Mining-Induced Stress and Coal Gas under an Optimized Support Scheme: A Case Study in the Guanyinshan Coal Mine, China

Table 9

Monitoring results: support stress and displacement of Section II (E03-Y9+0m).

Time	Support stress (MPa)					Displacement (mm)
	14^#	16^#	18^#	20^#	22^#
16/01/19	4.13	1.55	0.63	2.34	1.78	2
17/01/19	5.65	4.54	1.21	5.76	3.20	4
18/01/19	5.76	4.40	1.11	5.65	3.30	6
19/01/19	5.40	4.10	1.06	5.30	3.00	8
20/01/19	5.18	3.80	1.01	5.41	2.60	8
21/01/19	5.00	3.58	0.98	5.12	2.10	10
22/01/19	4.50	3.41	0.94	4.95	1.80	12
23/01/19	4.10	3.12	0.57	4.68	1.60	14
24/01/19	3.70	3.05	0.29	4.81	1.50	14
26/01/19	3.60	2.91	0.29	4.35	1.42	16
08/02/19	3.52	3.01	0.73	4.33	1.37	16
10/02/19	3.48	3.08	0.09	4.53	1.39	16
12/02/19	3.50	3.10	0.18	4.39	1.38	16
14/02/19	3.53	3.01	0.17	4.38	1.40	16
16/02/19	3.41	3.05	0.17	4.41	1.37	16