Stability Analysis of a Steep Rock Slope in a Large Open-Pit Mine in a High-Intensity Area: A Case Study of the Yejiagou Boron Iron Mine

Table 1

Dominant grouping of joint fissures at the observation points.

Observation point number	Number of groups	Number	Average propensity (°)	Average dip angle (°)
1	1	13	4	60
	2	7	210	54
	3	10	91	72
2	1	16	340	66
	2	15	194	55
	3	6	55	60
	4	3	305	77
3	1	45	347	66
	2	25	244	77
	3	12	74	30
4	1	17	342	65
	2	20	94	35
	3	7	84	82
	4	4	267	73