Prediction of Stope Stability Using Variable Weight and Unascertained Measurement Technique

Table 1

Classification criterion of quantitative indices.

Classification standard	Saturated uniaxial compressive strength () (MPa)	Rock quality designation () (%)	Stope span () (m)	Groundwater seepage volume () (L·min^-1·(10 m)^-1)	The rate of supporting pit roof () (%)
	>200	≥90	≤10	≤5	≥70
	200~100	90~75	15~10	10~5	60~70
	100~50	75~50	30~15	25~10	50~60
	50~25	50~25	50~30	50~25	35~50
	≤25	<25	>50	>50	<35