外文翻译综放沿空掘巷卸压技术研究

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1、英文原文Studyondestressingtechnologyforaroadwaydrivenalonggoafinafullymechanizedtop-coalcavingfaceAbstractBasedonthedeformationcharacteristicsoftheroadwaysdrivenalonggoafinfullymechanizedtop-coalcavingfaces,theauthorconsidersthatitisthekeytoensurethestabilityofsurroundingrocksofroadwaydrivena

2、longgoaftocontrolthedeformationduringtheperiodaffectedbymining.Consideringthecharacteristicsoftheroadwaylayoutinfullymechanizedtop-coalcavingfaces,atechnicalschemeofdestressingisputforwardandthedestressingeffectisanalyzedbyusingthesoftwareofUniversalDistinctElementCode3.0(UDEC-3.0).Keywor

3、dsfullymechanizedtop-coalcaving,gob-sideentrydriving,roadwaylayout1．Deformationcharacteristicsofthegob-sideentryinafullymechanizedtop-coalcavingfaceInthelightofkeystratumtheoryandthelawofoverlyingstratamovement,weknowthatalongthedipdirectionthemainroofbrokeincoalwallofthelowerdistrictsubl

4、evelandformedarockbeamstructurecalledbigstructureofsurroundingrocksaftertheupperdistrictsublevelisextractedforward.Atthesametime,thepeakofsideabutmentpressureistransferredtothedepthawayfromtheperipheryalongthedipdirectionandthecoalbodyunderthebigstructureliesinstress-relaxedareawherethego

5、b-sideentryislaidout,asshowninFig.1.Thestabilityanalysisofthebigstructureofsurroundingrocksandfieldsurveysallshowthatthedeformationlawoftheroadwaydrivenalonggoafinfullymechanizedtop-coalcavingfacesobviouslydiffersfromotherkindsofentries.Themaincharacteristicsarelistedasfollows[1,2].Fig.1T

6、hestructurerelationshipbetweengob-sideentryandoverlyingstratainafullymechanizedtop-coalcavingface(1)Duringtheperiodofroadwayexcavation,thedeformationlawofthegob-sideentryinafullymechanizedtop-coalcavingfaceissimilartothatofgeneralsoftrockroadway.Theroadwayexcavationplaysalittleeffectonthe

7、stabilityofthebigstructure.Thegob-sideentryoccurscertainvalueofdeformationbecausethestressaroundtheroadwaychangesandcomesoutstressconcentrationbyroadwayexcavation.(2)Duringtheperiodafterroadwayexcavationandbeforeminingeffect,thebigstructureofsurroundingrocksisstable