Table 3 Monolayer ratio of similar model materials for each rock layer.
From: Study on the in-situ modified support method of roadway surrounding rock under vertical impact load
Lithology | Thickness /cm | Sand/kg | Lime/kg | Gypsum/kg | Diatomite/kg | Mica/kg | Water/kg |
|---|---|---|---|---|---|---|---|
Fine sandstone | 2.33 | 17.04 | 1.42 | 1.42 | 0 | 0 | 1.99 |
Coarse sandstone | 2.5 | 19.37 | 1.21 | 1.21 | 0 | 0 | 2.18 |
Siltstone | 2.16 | 15.82 | 1.19 | 0.79 | 0 | 0 | 1.78 |
Sandy mudstone | 2 | 14.82 | 1.15 | 0.49 | 0 | 0 | 1.65 |
B42 coal seam | 1.5 | 11.01 | 0.96 | 0.41 | 0 | 0 | 1.24 |
B41 coal seam | 2 | 14.68 | 1.28 | 0.55 | 0 | 0 | 1.65 |
B3 coal seam | 1.8 | 13.21 | 1.16 | 0.50 | 0 | 0 | 1.49 |
B2 coal seam | 3 | 22.02 | 1.93 | 0.83 | 0 | 0 | 2.48 |
Equivalent surrounding rock region. | 2.55 | 0.83 | 4.12 | 1.00 | 0 | 0.85 | |
Reinforced region | 4.99 | 0.27 | 2.49 | 0.5 | 0 | 0.83 | |
Cracked region | 7.74 | 0.086 | 0.43 | 0 | 0.43 | 0.87 |
