Research on Coal Bed Methane (Gas) Occurrence Controlled by Geological Tectonics in the Southern Margin of North China Plate: A Case Study of the Pingdingshan Coalfield, China

Table 2

Statistics and analysis of CBM (gas) content of the research area in coal seam group F.

CBM belts	Range of CBM content/m^3/t (min ∼max/avg)	Depth range of CBM content measurement/m (min ∼max/avg)	Relationship between CBM content (W/m^3/t) and burial depth (H/m)
CBM belt I	3.32∼14.47/8.01	848 ∼1180/996.8	W = 0.0271H − 19.043 (750 < H < 1200)
CBM belt II	8.49∼19.58/12.44	427∼985/626.7	W = 0.0131H + 4.2609 (300 < H < 1100)
CBM belt III	4.77∼15.13/10.49	630∼1106/911.2	W = 0.0218H − 9.3485 (500 < H < 1100)
CBM belt IV	7.87∼27.2/16.00	489∼1117/690.5	W = 0.0142H + 6.1924 (200 < H < 1200)