Research Article
Experiment on Seepage Property and Sand Inrush Criterion for Granular Rock Mass
Figure 4
Rock particles with different size ranges: (a) 2.5 to 5.0 mm; (b) 5.0 to 8.0 mm; (c) 8.0 to 10.0 mm; (d) 10.0 to 12.0 mm; (e) 12.0 to 15.0 mm; (f) 15.0 to 20.0 mm.
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