Evaluation of Rock Quality of Tunnel Wall Rock Based on Rough Set Theory and Unascertained Measurement Theory

Table 3

Raw data of the rock samples.

Sample	/MPa			W/[L·(min·10m]	θ/°	Actual rock grade
1	62	0.35	1.5	5.3	10	IV
2	72	0.19	9.0	7.4	87	IV
3	65	0.32	9.3	11	17	III
4	61	0.34	2.5	5.2	46	IV
5	73	0.77	9.1	7.8	63	II
6	37	0.42	6.7	7.5	77	IV
7	58	0.28	5.8	2.0	42	III
8	61	0.35	9.0	7.1	25	III
9	65	0.34	2.5	4.6	67	III
10	52	0.32	9.6	6.0	86	III
11	67	0.27	8.2	0	58	III
12	63	0.33	9.6	8.7	24	III
13	28	0.20	7.5	5.8	65	IV
14	58	0.28	9.5	15.9	16	III
15	36	0.25	3.8	5.9	83	IV
16	28	0.28	3.5	6.2	82	IV
17	82	0.24	9.3	7.4	19	III
18	34	0.31	4.0	0	7	IV
19	26	0.32	3.3	0	14	IV
20	27	0.58	1.5	11.4	36	III
21	46	0.21	2.5	8.3	82	IV
22	33	0.42	5.7	5.2	82	III
23	12	0.17	1.5	5.1	67	V
24	6	0.21	1.7	6.4	53	V
25	7	0.13	3.3	5.9	46	V