Research on a Numerical Simulation and Prediction Model of Floor Mining Failure Depth in the Chenghe Mining Area

Table 2

Simulation results of floor failure depth under different conditions.

		Working face width (m)
		20	40	60	80	100	120	140	160	180	200
		Numerical simulation results of floor failure depth (m)
Burial depth of seam no. 5 (m)	100	0.0	1.7	4.2	6.0	7.4	8.6	9.5	10.4	11.1	11.8
	150	0.0	2.3	4.8	6.6	8.0	9.2	10.1	10.8	11.1	11.3
	200	0.0	2.9	5.4	7.2	8.6	9.7	10.7	11.2	11.3	11.9
	250	0.0	3.5	6.0	7.8	9.2	10.3	11.3	12.1	12.9	13.5
	300	0.0	4.0	6.6	8.4	9.8	10.9	11.9	12.7	12.9	13.1
	350	0.3	4.6	7.2	9.0	10.4	11.5	12.5	12.7	12.8	12.9
	400	0.9	5.2	7.7	9.5	10.9	12.1	13.0	13.2	13.6	14.1
	450	1.5	5.8	8.3	10.1	11.5	12.7	13.6	13.8	13.9	13.9
	500	2.1	6.4	8.9	10.7	12.1	13.3	14.2	14.5	14.8	15.4
	550	2.6	7.0	9.5	11.3	12.7	13.8	14.8	15.1	15.4	15.6
	600	3.2	7.6	10.1	11.9	13.3	14.4	15.4	15.5	15.8	15.8
	650	3.8	8.1	10.7	12.5	13.9	15.0	16.0	16.5	16.6	16.8