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.

GroupSchemeThe variation rates of lateral pressure (%)The average values of lateral pressure (Pa)
1# h = 1.45 m2# h = 1.25 m3# h = 1.05 m9# h = 1.45 m10# h = 1.25 mThe lower wallThe upper wall

11−9.89−7.07−2.94−7.64−5.3116381662
2−8.46−5.57−1.75−6.18−4.2614821500
3−6.70−4.71−1.63−5.03−3.8013601368
24−10.87−7.83−3.43−8.65−6.7416961720
5−9.39−6.50−2.83−7.00−5.1114281452
6−7.70−5.40−1.62−5.64−4.1713361348
37−9.26−6.19−2.77−6.75−4.9516821962
8−7.69−5.20−1.91−5.49−4.0915421558
9−6.60−4.40−1.60−5.00−3.5813301338