7Yao Y B,Liu D M,Tang D Z,et al.Fractal characterization of ad-sorption-pores of coals from North China:an investigation on CH4 ad-sorption capacity of coals[J].International Journal of Coal Geology,2008,73(1):27-42.
8Amarasekera G,Scarlett M J,Mainwaring D E.Micropore size distri-bution and specific interactions in coals[J].Fuel,1995,74(1):115-118.
9Levy J H,Day S J,Killingley J S.Methane capacities of Bowen Basincoals related to coal properties[J].Fuel,1997,76(9):813-819.
10Laxminara C H,Crosdae P J.Role of coal type and rank on methanesorption characteristics of Bowen Basin,Australia coals[J].Interna-tional Journal of Coal Geology,1999,40(4):309-325.
