熱力耦合作用下深井巷道圍巖變形規(guī)律研究.pdf

1、安徽理工大學(xué)碩士學(xué)位論文熱力耦合作用下深井巷道圍巖變形規(guī)律研究姓名：黎明鏡申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：巖土工程指導(dǎo)教師：榮傳新20100606摘要AbstractDeeprockmassisinacomplexenvironmentofhi班stress，hi曲temperature，11ighseepageflowpressureandintensiveextractionperturbation，Thenonlinearlargedef

2、ormationdynamichasbeenstrikingwhichleadingtoseriousdisastersandaccidentsincreaseinminingofdeepresources，oftenmakingdeeproadwayrepairandre—supportTherefore，itisnecessarytostudythedeformationcharacteristicandlong—termdefor

3、mingruleofsurroundingrockofde印mineroadways謝tllthermomechanicalcouplingBasedonthefiniteelementsoftwareANSYS，thetemperaturedistributionofthesurroundingrockunderdifferentventilationworkingconditionsiscalculatingThenthestres

4、sanddeformationofthesurroundingrockafterexcavationareanalyzesusingthermodynamiccouplemethod，andcoupledwiththein—situmeasuredresults，thetimeeffectofthesurroundingrockdeformationiscalculatedThenumericalcalculationresultsha

5、vebeencomparedwiththemeasuredvaluesandgoodagreementisobtainedResultsindicatethat：consideringthethermomechanicalcoupling，thesurroundingrockstressis4Mpabiggerthanuncouplingthesurroundingrockdeformationwillbealmost26％larger

6、Themaximumdifferencestressispivotedatradialdepth15metersTheinfluenceofthermomechanicalcouplingonsurroundingrockstressanddeformationisremarkableatradialdepthof0to76meters，littleatradialdepthof76to14meters，nothingatradiald

7、epthmorethan14metersActualmeasurementshowthat，duringthefirstthirtydaysafterexcavationofdeepmineroadways，therateofdeformationisfast，andthedeformationcharacteristiccorrespondstoprimarycreepstageoftherockcreepcurves；afterth

8、irtydays，therateofdeformationdropsandthedeformationcharacteristiccorrespondstosteadycreepstageAccordingtothemeasuredresultsofrockdeformationwereinforcetheroadwaysintimeifnecessarytomakesurethesafetyofdeepmineroadwaysduri