Study on Gas Migration Law of Mining Coal Seam under the Influence of Normal Fault

Table 2

Fractal dimension statistics at different excavation distances for coal seam No. 9.

Excavation distance (m)	Fitting relationship	Correlation coefficient ()	Excavation distance (m)	Fitting relationship	Correlation coefficient ()
20		0.9947	120		0.9945
40		0.9958	140		09946
60		0.9944	160		0.9945
80		0.9943	180		0.9945
100		0.9945	200		0.9939