Experimental Investigation of the Influence for Stoping Sequence and Granular Grading on Lateral Pressure during the Nonpillar Sublevel Caving Mining

Table 7

The reduction rates of lateral pressure in the first stage for drawing ore.

Group	Scheme	The variation rates of lateral pressure (%)
		1# h = 1.45 m	2# h = 1.25 m	3# h = 1.05 m	9# h = 1.45 m	10# h = 1.25 m
1	1	−4.77	−3.94	−1.32	−3.56	−3.12
	4	−6.75	−4.72	−2.37	−5.10	−3.81
	7	−2.89	−2.15	−0.84	−2.59	−1.82
2	2	−3.89	−3.14	−1.03	−3.21	−2.52
	5	−6.12	−4.04	−2.16	−4.16	−3.55
	8	−2.82	−2.10	−0.80	−2.34	−1.42
3	3	−2.95	−2.55	−0.86	−2.61	−2.02
	6	−4.58	−3.18	−1.08	−3.12	−2.57
	9	−2.67	−1.59	−0.74	−2.30	−1.44