Aquiclude Stability Evaluation and Significance Analysis of Influencing Factors of Close-Distance Coal Seams: A Case Study of the Yili No. 4 Coal Mine in Xinjiang, China

Table 7

Evaluation factors derived for different schemes.

Scheme	Upper coal seam mining height (m)	Lower coal seam mining height (m)	Seam spacing (m)	Maximum subsidence gradient (m m^-1)	Maximum horizontal deformation (m m^-1)	Maximum seepage rate (×10^-7 m s^-1)
1	3	5	10	0.0923	0.0088	0.45
2	3	9	20	0.1212	0.0092	0.46
3	3	13	30	0.1491	0.0116	0.48
4	6	5	20	0.1139	0.0135	0.22
5	6	9	30	0.1570	0.0138	0.45
6	6	13	10	0.1782	0.0204	3.47
7	9	5	30	0.1640	0.0140	0.34
8	9	9	10	0.1762	0.0227	3.2
9	9	13	20	0.1932	0.0305	3.62