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

Table 6

Evaluation results of wall rock quality.

Sample	Comprehensive unascertained measurement					Evaluation results
						RS-UM	Actual grade
1	0.057	0.045	0.331	0.235	0.332	IV	IV
3	0.243	0.066	0.357	0.307	0.027	III	III
4	0.094	0.008	0.390	0.386	0.122	IV	IV
5	0.486	0.145	0.353	0.016	0	II	II
7	0.102	0.049	0.466	0.383	0	III	III
8	0.259	0.086	0.340	0.315	0	III	III
9	0.102	0.061	0.374	0.342	0.122	IV	III
10	0.373	0.061	0.355	0.211	0	III	III
11	0.151	0.223	0.340	0.287	0	III	III
13	0.069	0.280	0.084	0.199	0.367	IV	IV
15	0.154	0.037	0.078	0.692	0.039	IV	IV
16	0.142	0.049	0.085	0.478	0.245	IV	IV
18	0.102	0	0.170	0.548	0.179	IV	IV
19	0.102	0	0.187	0.360	0.351	IV	IV
20	0.243	0.220	0.172	0.094	0.271	III	III
22	0.183	0.028	0.430	0.243	0.116	III	III
23	0.098	0.065	0.028	0.292	0.517	V	V
25	0.065	0.037	0.041	0.291	0.566	V	V

Note: RS-UM is the evaluation method based on rough set theory and unascertained measurement theory.