Table 2 Composition and size of coal-rock combinations.
Sample grouping | Sample number | Rock-coal-rock | Sample size (diameter × height) |
|---|---|---|---|
RCR-1 | 1 | Sandstone-coal-red sandstone | 50.00 mm×100.11 mm |
2 | 50.02 mm×100.41 mm | ||
3 | 50.01 mm×100.81 mm | ||
RCR-2 | 4 | Sandstone-coal-mudstone | 50.12 mm×100.95 mm |
5 | 50.02 mm×100.22 mm | ||
6 | 50.15 mm×100.51 mm | ||
RCR-3 | 7 | Sandstone-coal-sandy mudstone | 50.11 mm×100.01 mm |
8 | 50.08 mm×100.15 mm | ||
9 | 50.18 mm×100.61 mm | ||
RCR-4 | 10 | Sandstone-coal-sandstone | 50.05 mm×100.06 mm |
11 | 50.09 mm×100.55 mm | ||
12 | 50.15 mm×100.22 mm |
