Research Article
Experimental Investigation of the Influence for Stoping Sequence and Granular Grading on Lateral Pressure during the Nonpillar Sublevel Caving Mining
Table 8
The relationship between the granular grading and lateral pressure of reduction rates and average values.
| Group | Scheme | The variation rates of lateral pressure (%) | The average values of lateral pressure (Pa) | 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 | The lower wall | The upper wall |
| 1 | 1 | −9.89 | −7.07 | −2.94 | −7.64 | −5.31 | 1638 | 1662 | 2 | −8.46 | −5.57 | −1.75 | −6.18 | −4.26 | 1482 | 1500 | 3 | −6.70 | −4.71 | −1.63 | −5.03 | −3.80 | 1360 | 1368 | 2 | 4 | −10.87 | −7.83 | −3.43 | −8.65 | −6.74 | 1696 | 1720 | 5 | −9.39 | −6.50 | −2.83 | −7.00 | −5.11 | 1428 | 1452 | 6 | −7.70 | −5.40 | −1.62 | −5.64 | −4.17 | 1336 | 1348 | 3 | 7 | −9.26 | −6.19 | −2.77 | −6.75 | −4.95 | 1682 | 1962 | 8 | −7.69 | −5.20 | −1.91 | −5.49 | −4.09 | 1542 | 1558 | 9 | −6.60 | −4.40 | −1.60 | −5.00 | −3.58 | 1330 | 1338 |
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