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1、極松軟煤體高壓吸附過程中變形特性試驗(yàn)研究劉延保V(1.瓦斯災(zāi)害監(jiān)控與應(yīng)急技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室，重慶400037：2.中煤科工集團(tuán)重慶研究院有限公司，重慶400037)摘要：突出煤層大都層理紊亂、存在煤質(zhì)極其松軟的軟分層，軟分層吸附瓦斯和釋放瓦斯的能力比硬分層大許多，突出危險(xiǎn)性更大。為分析軟分層在高壓條件下的吸附變形特性，研制了煤層瓦斯吸附解吸變形動(dòng)態(tài)測(cè)試裝置，并利用該裝置進(jìn)行了恒溫定容條件下煤樣吸附、解吸瓦斯過程中吸附量與應(yīng)變的同步測(cè)試。研究結(jié)果表明：等溫吸附曲線、等溫解吸曲線和等溫吸附應(yīng)變曲線均服從
2、朗格繆爾方程，等溫解吸應(yīng)變曲線服從改進(jìn)的朗格繆爾方程；軟分層吸附一解吸過程可逆，吸附一解吸變形不可逆；瓦斯吸附量與體應(yīng)變呈非線性關(guān)系。通過對(duì)實(shí)驗(yàn)數(shù)據(jù)的統(tǒng)計(jì)分析，建立了軟分層煤體應(yīng)變與吸附量的精確擬合方程。關(guān)鍵詞：極松軟煤體；軟分層；瓦斯吸附量；吸附變形；恒溫定容中圖分類號(hào)：TD713文獻(xiàn)標(biāo)志碼：AExperimentalInvestigationontheDeformationCharacteristicsunderHighPressureAbsorptionofUltraSoftCoalLIUYa
3、nbao12(1.StateKeyLaboratoryofGasDisasterMonitoringandEme/'gencyTechnology,Chongqing400037,China;2.ChinaCoalTechnology'andEngineeringGroupChongqingResearchInstitute,Chongqing400037.China)Abstract：Mostoutburstcoalscamswithbeddingdisorderandcoalqualityext
4、remelysofthierarchicallayers,theabsorbandreleasegasabilityofsofthierarchicallayerismorethanthehardhierarchicallayer,socoalandgasoutburstdangerousisgreater。Inordertoinvestigatethecharacterbehaviorofswellingdeformationandcontractiondeformationefleetofsof
5、thierarchicallayerunderhighpressure,thedynamictestingdeviceofgasadsorptiondesoiptiondef()nnationofcoalseamwasdeveloped,andthedevicewasusedtoperformthesynchronoustestofadsorptionandstrainundertheconstanttemperatureandvolume,fherelationbetweenbodystraina
6、ndgasadsorptionisdiscussed?Theresultsshowthattheisothermaladsorptioncurve,theisothermaldesorptioncurveandtheisothermaladsoiptivcdeformationcurvewillfollowtheLangmuircequation,whiletheisothermaldcsorptivcdeformationcurvewillfollowtheImprovedLangmuirccqu
7、ation.Theprocessofadsorption-desorptionisreversible,whiletheadsorption-desorptiondefonnationofsofthierarchicallayerisirreversible?Bodystrainandthevolumeofgasadsorptionarenonlinearlyrelated.Usingtheanalysisresultsofexperiment,thebodystrainandadsorptionq
8、uantityprecisefittingequationofsofthierarchicallayerwasestablished.Keywords：ultrasoftcoal：softlayered：adsorption；adsorptivedelonnation；constanttemperatureandvolume近年來(lái)，隨著國(guó)內(nèi)外研究者對(duì)煤巖瓦斯動(dòng)力災(zāi)害發(fā)生機(jī)制、瓦斯抽采、以及二氧化碳煤層封存等收稿日期：基金項(xiàng)目：國(guó)家“十三五”科技重大專項(xiàng)(2016ZX0
