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

Table 8

Monitoring results: support stress and displacement of Section I (E03-Y8+11m).

Time	Support stress (MPa)					Displacement (mm)
	13^#	15^#	17^#	19^#	21^#
28/12/18	0.92	0.04	0.45	1.11	0.43	4
29/12/18	1.05	0.13	1.21	4.31	2.98	8
30/12/18	1.01	0.14	1.11	3.90	2.80	12
31/12/18	0.96	0.14	1.06	3.70	2.43	14
2/01/19	0.93	0.12	1.01	3.50	2.51	16
4/01/19	0.91	0.13	0.98	3.20	2.23	18
5/01/19	0.92	0.04	0.94	3.08	2.09	20
7/01/19	0.91	0.11	0.57	2.52	1.80	22
9/01/19	—	0.10	0.29	2.32	1.62	24
11/01/19	—	0.06	0.29	2.45	1.68	26
13/01/19	—	0.05	0.73	2.20	1.85	28
17/01/19	—	0.04	0.09	2.56	1.49	28
18/01/19	—	0.04	0.18	2.48	1.46	28
20/01/19	—	0.04	0.17	2.55	1.51	28
22/01/19	—	—	—	2.50	1.47	28
24/01/19	—	—	—	2.05	1.41	28