Comprehensive Experimental Study of Affecting Factors on Rectangular Roadway Stability

Table 5

Depth and comprehensive stress of surrounding rock of each site.

Depth (m)	Test location	Comprehensive strength of surrounding rock (MPa)
400	1	12
	2	25
	3	68
600	4	7
	5	23
	6	53
800	7	15
	8	25
	9	48