Stability Assessment of High and Steep Cutting Rock Slopes with the SSPC Method

Table 2

Characteristics of the main discontinuity sets in the surveyed slopes.

Slope	Joint	Statistical dominant discontinuity			Geological dominant discontinuity			Note
		Dip direction (°)	Dip (°)	Spacing (m)	Dip direction (°)	Dip (°)	Spacing (m)	Prospecting tunnel
1	B1	217	70	0.2–0.5	190	70	0.2–0.5	PD09
	J1	113	32	0.1–0.3	75	45	0.1–0.3
	J2	138	83	0.1–0.3	305	55	0.1–0.3
2	B1	217	70	0.2–0.5	215	75	0.3–0.6
	J1	113	32	0.1–0.3	130	15	0.2–0.4
	J2	138	83	0.1–0.3	130	80	0.2–0.4
3	B1	194	66	0.1–0.5	190	60	0.1–0.5	PD01
	J1	122	54	0.2–0.6	120	55	0.2–0.6
	J2	318	69	0.2–0.6	335	60	0.2–0.6
4	B1	194	66	0.1–0.5	185	65	0.2–0.6
	J1	122	54	0.2–0.6	125	60	0.3–0.7
	J2	318	69	0.2–0.6	330	65	0.3–0.7
5	B1	205	68	0.1–0.4	205	70	0.1–0.4	PD07
	J1	78	38	0.1–0.4	70	25	0.1–0.3
	J2	327	64	0.2–0.4	315	60	0.3–0.4
6	B1	195	75	0.2–0.5	200	50	0.1–0.4	PD20
	J1	325	45	0.1–0.3	140	85	0.2–0.4
	J2	300	85	0.2–0.6	35	45	0.3–0.7