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 channelVariation rates of lateral pressure (%)
Scheme 1Scheme 2Scheme 3Scheme 4Scheme 5Scheme 6Scheme 7Scheme 8Scheme 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 m3.202.852.171.762.134.282.942.543.32
5# h = 0.65 m2.752.192.013.171.571.962.692.232.14
6# h = 0.45 m2.122.272.043.151.771.062.512.432.18
7# h = 0.25 m3.222.432.313.833.651.452.732.542.49
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 m1.492.100.851.731.391.171.781.531.30
12# h = 0.85 m2.412.011.052.011.621.292.341.562.09
13# h = 0.65 m1.761.491.291.331.261.261.791.581.49
14# h = 0.45 m3.623.283.073.953.473.483.633.492.88
15# h = 0.25 m2.082.012.293.102.882.412.662.492.03
16# h = 0.05 m−3.49−2.47−3.9−4.0−3.97−3.16−6.20−6.78−6.40