An Improved Method for Estimating the Strength of Jointed Rock Mass Using Drilling Technology

Table 4

Summary of rock properties at the site.

Segment no.	Rock	(GPa)	(MPa)	(N/mm^2)	RQD	RMR	Q	GSI
1	Limestone	13.8	74.6	271.3	93.50	81.90	8.39	63.14
2		13.8	74.6	271.3	65.40	74.50	5.12	58.70
3		13.8	74.6	271.3	70.50	76.24	5.75	59.74
4		13.8	74.6	271.3	78.20	79.65	7.22	61.79
5		13.8	74.6	271.3	75.30	77.94	6.44	60.76
6		13.8	74.6	271.3	45.20	65.71	2.85	53.43
7		13.8	74.6	271.3	91.50	81.62	8.23	62.97
8		13.8	74.6	271.3	88.60	77.56	6.28	60.54
9		13.8	74.6	271.3	93.50	82.22	8.57	63.33
10	Tuff	4.9	31	105.3	90.70	77.73	6.35	60.64
11		4.9	31	105.3	91.10	79.57	7.18	61.74
12	Marble	23.4	87	295.1	60.20	74.53	5.13	58.72
13		23.4	87	295.1	50.60	73.90	4.92	58.34
14		23.4	87	295.1	63.80	75.95	5.64	59.57