Table 1 Characteristics of coal and rock strata27.
Rock name | Thickness/m | Lithological description |
|---|---|---|
Kern stone | 15.9 | Light gray, no bedding, siliceous cementation, hard |
B4-2 Coal | 2.5 | Black, layered, dark black coal-based charcoal |
Sandy Mudstone | 7.70 | Dark gray, carbon-containing debris, broken lithology, medium-hard |
Mudstone | 7.88 | Gray, argillaceous structure, lithology broken, medium hard |
Kern stone | 4.65 | Light gray, thick layered, no bedding, medium hard |
Mudstone | 2.1 | Gray, argillaceous structure, lithology broken, medium hard |
B4-1 coal | 5.50 | Black, with dirt band, stepped fracture, medium hard |
Mudstone | 7.70 | Gray, argillaceous structure, lithology broken, medium hard |
Kern stone | 14.4 | Light gray, thick layered, no bedding, medium hard |
