Surrounding Rock Stability Classification Method of Coal Roadway Based on In Situ Stress

Table 6

Determination results of surrounding rock stability evaluation index of No.3302 roadway.

Evaluation index	Rrz	Rbrz	Rfz		σh	N	C0
	(MPa)	(MPa)	(MPa)	(MPa)	(MPa)		(m)
Value	18.9	7.2	12.3	26.3	29.1	2.7	16.3