Comprehensive Experimental Study of Affecting Factors on Rectangular Roadway Stability

Table 2

Factors and levels of orthogonal numerical simulation experiment.

Levels	A	B	C	D	E
	a (m)	b (m)	H (m)	λ	σi (MPa)
1	3	2.5	200	0.3	8
2	3.5	3	400	0.6	28
3	4	3.5	600	0.9	48
4	4.5	4	800	1.2	68
5	5	4.5	1000	1.5	88