Correlation between the Joint Roughness Coefficient and Rock Joint Statistical Parameters at Different Sampling Intervals

Table 3

Calculated JRC values at different Δx values.

Back-calculation value of JRC	Sampling interval (mm)
	0.05	0.1	0.5	1	2	4	5	6	10
0.4	0.37	0.41	0.40	0.41	0.40	0.39	0.40	0.38	0.36
2.8	2.88	2.82	2.78	2.78	2.90	2.69	2.72	2.67	2.57
5.8	5.62	5.81	5.81	5.68	5.71	5.61	5.74	5.68	5.33
6.7	7.07	6.73	6.82	6.91	6.64	6.53	6.57	6.49	6.38
9.5	8.61	9.75	9.74	9.34	9.67	9.22	9.29	9.27	9.10
10.8	10.54	10.67	11.02	10.98	10.78	10.32	10.65	10.44	10.21
12.8	13.87	12.87	12.60	12.71	12.71	12.50	12.77	12.62	12.48
14.5	14.15	14.56	14.76	14.31	14.59	14.16	14.32	14.21	14.47
16.7	15.25	16.83	16.40	16.44	16.54	16.19	15.93	15.90	16.38
18.7	19.58	18.54	18.46	18.47	18.60	17.84	18.25	17.70	17.31

Note: bold values in the table are the JRC values with relative errors greater than 5%.