Rock strata ID | Lithology | Thickness/cm | Sand/kg | Gypsum/kg | Calcium carbonate/kg | Water/kg | Pulverized coal/kg |
1 | Coal seam floor | 5 | 35.0 | 2.2 | 2.8 | 5.0 |
|
2 | Coal seam | 3 | 22.0 | 0.4 | 1.6 | 3.0 |
|
3 | Soft rock 1 | 10 | 66.7 | 4.0 | 9.3 | 10.0 | 1.5 |
4 | Key strata 1 | 10 | 64.0 | 4.8 | 11.2 | 10.0 |
|
5 | Soft rock 2 | 10 | 66.7 | 4.0 | 9.3 | 10.0 | 1.5 |
6 | Key strata 2 | 20 | 128.0 | 9.6 | 22.4 | 20.0 |
|