Table 1 The strata
Stratigraphic unit | Coal seam and layer | Floor depth (m) | Thickness (m) | |
|---|---|---|---|---|
System | Formation | |||
Quatemary | Aquifer | 25.96 | 25.96 | |
Neogene | 42.38 | 16.42 | ||
Aquifuge | 49.70 | 7.32 | ||
Permian | \(\hbox {P}_{2}\)s | 74.70 | 25.00 | |
\(\hbox {P}_{1}\)x | 124.27 | 49.57 | ||
\(\hbox {P}_{1}\)s | 183.88 | 59.61 | ||
Carboniferous | \(\hbox {C}_{3}\)t | 4# Coal Seam | 195.88 | 12.00 |
263.64 | 67.76 | |||
\(\hbox {C}_{2}\)b | 302.17 | 38.53 | ||
Ordovician | 702.17 | 400.00 | ||