Research Article
Experimental Investigation of the Influence for Stoping Sequence and Granular Grading on Lateral Pressure during the Nonpillar Sublevel Caving Mining
Table 6
The variation rates of lateral pressure under different stoping sequences and granular gradings.
| Test channel | Variation rates of lateral pressure (%) | Scheme 1 | Scheme 2 | Scheme 3 | Scheme 4 | Scheme 5 | Scheme 6 | Scheme 7 | Scheme 8 | Scheme 9 |
| 1# h = 1.45 m | −9.89 | −8.46 | −6.70 | −10.87 | −9.39 | −7.70 | −9.26 | −7.69 | −6.60 | 2# h = 1.25 m | −7.07 | −5.57 | −4.71 | −7.83 | −6.50 | −5.40 | −6.19 | −5.20 | −4.40 | 3# h = 1.05 m | −2.94 | −1.75 | −1.63 | −3.43 | −2.83 | −1.62 | −2.77 | −1.91 | −1.60 | 4# h = 0.85 m | 3.20 | 2.85 | 2.17 | 1.76 | 2.13 | 4.28 | 2.94 | 2.54 | 3.32 | 5# h = 0.65 m | 2.75 | 2.19 | 2.01 | 3.17 | 1.57 | 1.96 | 2.69 | 2.23 | 2.14 | 6# h = 0.45 m | 2.12 | 2.27 | 2.04 | 3.15 | 1.77 | 1.06 | 2.51 | 2.43 | 2.18 | 7# h = 0.25 m | 3.22 | 2.43 | 2.31 | 3.83 | 3.65 | 1.45 | 2.73 | 2.54 | 2.49 | 8# h = 0.05 m | −6.39 | −4.34 | −5.61 | −5.77 | −4.41 | −4.28 | −5.93 | −6.24 | −5.05 | 9# h = 1.45 m | −7.64 | −6.18 | −5.03 | −8.65 | −7.00 | −5.64 | −6.75 | −5.49 | −5.00 | 10# h = 1.25 m | −5.31 | −4.26 | −3.80 | −6.74 | −5.11 | −4.17 | −4.95 | −4.09 | −3.58 | 11# h = 1.05 m | 1.49 | 2.10 | 0.85 | 1.73 | 1.39 | 1.17 | 1.78 | 1.53 | 1.30 | 12# h = 0.85 m | 2.41 | 2.01 | 1.05 | 2.01 | 1.62 | 1.29 | 2.34 | 1.56 | 2.09 | 13# h = 0.65 m | 1.76 | 1.49 | 1.29 | 1.33 | 1.26 | 1.26 | 1.79 | 1.58 | 1.49 | 14# h = 0.45 m | 3.62 | 3.28 | 3.07 | 3.95 | 3.47 | 3.48 | 3.63 | 3.49 | 2.88 | 15# h = 0.25 m | 2.08 | 2.01 | 2.29 | 3.10 | 2.88 | 2.41 | 2.66 | 2.49 | 2.03 | 16# h = 0.05 m | −3.49 | −2.47 | −3.9 | −4.0 | −3.97 | −3.16 | −6.20 | −6.78 | −6.40 |
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