Table 1 Proximate analysis and adsorption parameters of the 8# coal seam.

From: Intensive field measurements for characterizing the permeability and methane release with the treatment process of pressure-relief mining

Coal seam

Mad (%)

Aad (%)

Vad (%)

a (mL/g)

b (MPa−1)

8#

0.94

18.32

23.56

28.3

0.88

  1. Mad, Aad and Vad are the abbreviation of moisture air-dried basis, ash air-dried basis and volatiles air-dried basis, a and b are adsorption constants.