Optimized Analysis Method for Evaluating the Shear Strength Parameters of Rock Joint Surfaces

Table 2

Joint roughness coefficients (JRC).

Serial number	σn (MPa)	Experimental value of σ (MPa)	JRC
1	1.0	1.07	9.97
2		1.13	10.88
3		1.21	12.02
4	1.5	1.30	7.17
5		1.51	9.97
6		1.60	11.06
7	2.0	1.70	7.41
8		1.96	10.32
9		2.30	13.58
10	2.5	2.46	11.17
11		2.60	12.39
12		2.86	14.48