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煤炭科学技术 2015
河南省中-高煤阶构造变形煤甲烷吸附/解吸特征研究Keywords: medium,and,high,coal,rank,tectonic,deformation,coal,methane,adsorption/desorption,characteristics Abstract: Themethaneadsorption/desorptioncapacityandcharacteristicswererelatedtothedegreeofcoalmetamorphismanddeformationstructure.Theisothermaladsorption/desorptionexperimentoffivemediumandhighranktectonicdeformationcoalssamplesattypicalminingfieldsinHenanProvincewereconducted,theresultsshowedthatthemethaneadsorptioncapacityofweakbrittletectonicdeformationcoalsofmediumandhighrankincreasedwithincreasingalongwiththedegreeofcoalmetamorphism.Asthepressurerised，theincrementofmethaneabsorptionquantitydecreasedgraduallyandtendedtozero,whiletheincrementofmethaneabsorptionquantityincreasedwiththeincrementofthedegreeofcoalmetamorphism.Themethanedesorptionquantityduringunitpressurewithintheperiodincreasedwithpowerfunctionwiththepressuredecreasing.Withthedegreeofcoalmetamorphismincreased,themethanedesorptionquantityduringunitpressurewithintheperiodincreased.Themethanedesorptionquantitycurvewasmonotoneincreasinglogarithmicfunctionwithpressuredecreasedtodifferenttectonicdeformationcoals,themethanedesorptionquantitywasimprovedwiththeincreasingtectonicdeformationdegree.
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