基于管控平台监测数据的瓦斯抽采数值模拟分析研究

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中图分类号：P424.3 文献标志码：A 文章编号：2095-2945（2025）21-0072-04

Abstract：Againstthebackgroundoftheincreasinglywidespreadapplicationof inteligentgasdrainagesystems，thispaper proposesanumericalsimulationanalysismethodbasedonaninteligentdatamanagementandcontrolplatformdrivenbymultifeldandmultiphasecoupledcores.Throughthismethod，theboreholeextractionprocessissimulatedandtheformation deformationandthechangelawsofairpressureinthecoalseamduringdirectionaldrilingareanalyzed.Theresearchresults show that： Simulating borehole extraction under the conditions of P0 =8.71 MPa and T =303K，itwasfound that the formation air pressurechangedsignificantlydynamically.Thereservoirairpressuredroppedbyabout5O%within1Ominutesandthen stabilized;afterboreholeextraction，gasmigrationstabilizedandflowedtothelowpresureareaintheborehole.Theradiusof influenceofthepressureexpandswithtime，andthesurroundingairpressuredecreases，andtheincreaseininitialpressure significantlyincreasestheinfluencerangeandvolumeofgasdrainage.Thegasdesorptionandmigrationrateaccelerateunder highpressure，increasingthepressure gradientandflowspeed;Temperatureafectstherateofchangeofairpressrenearthe borehole.Atlowtemperatures，thegasviscosityislarge，resultinginslowchange，andathightemperatures，thegasviscosityis small and changes rapidly.

Keywords：gasdrainage;multi-fieldandmulti-phasecoupling;numericalsimulation;formationdeformation;pressrechange

随着科技的发展，在煤矿瓦斯治理和抽采领域，瓦斯智能抽采系统的应用日益广泛，其全面的数据处理服务为井下瓦斯抽采过程中的决策提供了强有力的支持，是我国煤矿智能化进程中矿井灾害防控智能化发展的必然趋势，也是矿并高效精准抽采瓦斯的现实需求[1-3]。（剩余4907字）