Quantitative Identification of the Water Resistance Capacity of Composite Strata in Mining Coal Seam Floors

Table 11

Evaluation results of each borehole in the mining area.

Drilling hole	Level eigenvalue					Waterproof ability grade
	,	,	,	,	Mean
1	3.6544	3.5047	4.1654	3.9117	3.8091	IV
2	3.502	3.4306	4.0213	3.9278	3.7204	IV
3	3.6759	3.5109	4.239	3.9485	3.8436	IV
4	3.7136	3.5287	4.2675	3.9754	3.8713	IV
5	2.2395	2.3538	1.9527	2.1855	2.1829	II
6	3.7877	3.6014	4.5335	4.2561	4.0447	IV
7	3.588	3.4534	4.2084	3.9854	3.8088	IV
8	3.7403	3.5429	4.2758	3.9915	3.8876	IV
9	3.6678	3.5091	4.2116	3.9349	3.8308	IV
10	3.2876	3.2574	3.6278	3.5052	3.4195	III
11	3.1764	3.2221	3.2825	3.3479	3.2572	III
12	2.3663	2.2988	2.5043	2.4577	2.4068	II
13	3.3073	3.2887	3.5358	3.5015	3.4083	III
14	2.1647	2.2678	1.9389	2.1243	2.1239	II
15	2.5617	2.606	2.5215	2.6208	2.5775	III
16	2.279	2.3811	2.0797	2.2682	2.252	II
17	3.296	3.2668	3.6164	3.5123	3.4229	III
18	2.2245	2.3447	1.9259	2.1655	2.1652	II
19	3.182	3.2255	3.2919	3.354	3.2634	III
20	3.7163	3.5353	4.1929	3.9606	3.8513	IV
21	2.3663	2.2988	2.5043	2.4577	2.4068	II
22	2.2127	2.3157	1.9924	2.1817	2.1756	II
23	2.9916	3.0838	2.9515	3.1097	3.0342	III
24	2.2272	2.3463	1.9305	2.1691	2.1683	II
25	3.2634	3.2673	3.4148	3.4315	3.3442	III
26	2.8611	2.9716	2.7547	2.9459	2.8833	III
27	3.7387	3.5425	4.2704	3.9899	3.8854	IV
28	2.4441	2.3738	2.5554	2.5058	2.4698	II
29	2.9519	3.0502	2.886	3.0575	2.9864	III
30	3.2971	3.288	3.4872	3.4804	3.3882	III
31	2.1914	2.2944	1.9676	2.1556	2.1522	II
32	3.3017	3.2728	3.608	3.5157	3.4246	III
33	3.7246	3.5343	4.2739	3.9827	3.8789	IV
34	3.3003	3.2884	3.5022	3.4872	3.3945	III
35	3.5887	3.4537	4.2099	3.9861	3.8096	IV
36	2.5617	2.606	2.5215	2.6208	2.5775	III
37	2.1914	2.2944	1.9676	2.1556	2.1522	II
38	4.6934	4.5189	5.2535	4.9613	4.8568	V
39	2.4271	2.3573	2.5431	2.4942	2.4554	II
40	1.8025	1.8694	1.6102	1.7337	1.754	I
41	1.7928	1.8653	1.6009	1.7255	1.7461	I
42	3.0531	3.1345	3.0596	3.1939	3.1103	III
43	2.2044	2.3317	1.8922	2.1376	2.1415	II
44	3.255	3.2636	3.4034	3.4245	3.3366	III
45	4.7221	4.5373	5.2134	4.9691	4.8605	V
46	3.2578	3.2649	3.4072	3.4269	3.3392	III
47	4.7378	4.541	5.2804	4.9908	4.8875	V
48	3.2883	3.2582	3.6268	3.5059	3.4198	III