Influence Factors’ Analysis of the Face-End Roof Leaks Exposed to Repeated Mining Based on Multiple Linear Regression

Table 1

Distribution range of face-end roof caving at each station.

Support number	Roof height (m) distribution ratio (%)
	0–0.25	0.25–0.5	0.5–0.75	0.75–1	＞1
No. 15	92	5	3	0	0
No. 45	88	7	5	0	0
No. 75	86	10	4	0	0
No. 105	87	7	6	0	0
No. 125	90	4	6	0	0