Comprehensive Experimental Study of Affecting Factors on Rectangular Roadway Stability

Table 3

The scheme for orthogonal experiment.

Experiment no.	Factors					Index
	a (m)	b (m)	H (m)	λ	σi (MPa)	Dc (mm)
1	3 (1)	2.5 (1)	200 (1)	0.3 (1)	8 (1)	14.9
2	3	3 (2)	400 (2)	0.6 (2)	28 (2)	38.3
3	3	3.5 (3)	600 (3)	0.9 (3)	48 (3)	55.5
4	3	4 (4)	800 (4)	1.2 (4)	68 (4)	100
5	3	4.5 (5)	1000 (5)	1.5 (5)	88 (5)	93.5
6	3.5 (2)	2.5	400	0.9	68	48.1
7	3.5	3	600	1.2	88	60
8	3.5	3.5	800	1.5	8	243.2
9	3.5	4	1000	0.3	28	94.7
10	3.5	4.5	200	0.6	48	16.4
11	4 (3)	2.5	600	1.5	28	94.6
12	4	3	800	0.3	48	79.5
13	4	3.5	1000	0.6	68	113
14	4	4	200	0.9	88	37.8
15	4	4.5	400	1.2	8	76.8
16	4.5 (4)	2.5	800	0.6	88	95.6
17	4.5	3	1000	0.9	8	260.5
18	4.5	3.5	200	1.2	28	29.5
19	4.5	4	400	1.5	48	59.5
20	4.5	4.5	600	0.3	68	42.1
21	5 (5)	2.5	1000	1.2	48	132
22	5	3	200	1.5	68	32.8
22	5	3.5	400	0.3	88	40.5
24	5	4	600	0.6	8	96.8
25	5	4.5	800	0.9	28	110