外文翻译--综放沿空掘巷卸压技术研究-豆柴文库

外文翻译--综放沿空掘巷卸压技术研究.doc

2024-01-28

13金币

526KB

15页

胜利****实阿

实名认证

内容提供者

1/10

2/10

3/10

4/10

5/10

6/10

7/10

8/10

9/10

10/10

亲，该文档总共15页，到这已经超出免费预览范围，如果喜欢就直接下载吧～

下载提示文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

英文原文Studyondestressingtechnologyforaroadwaydrivenalonggoafinafullymechanizedtop-coalcavingfaceAbstractBasedonthedeformationcharacteristicsoftheroadwaysdrivenalonggoafinfullymechanizedtop-coalcavingfaces,theauthorconsidersthatitisthekeytoensurethestabilityofsurroundingrocksofroadwaydrivenalonggoaftocontrolthedeformationduringtheperiodaffectedbymining.Consideringthecharacteristicsoftheroadwaylayoutinfullymechanizedtop-coalcavingfaces,atechnicalschemeofdestressingisputforwardandthedestressingeffectisanalyzedbyusingthesoftwareofUniversalDistinctElementCode3.0(UDEC-3.0).Keywordsfullymechanizedtop-coalcaving,gob-sideentrydriving,roadwaylayout1．Deformationcharacteristicsofthegob-sideentryinafullymechanizedtop-coalcavingfaceInthelightofkeystratumtheoryandthelawofoverlyingstratamovement,weknowthatalongthedipdirectionthemainroofbrokeincoalwallofthelowerdistrictsublevelandformedarockbeamstructurecalledbigstructureofsurroundingrocksaftertheupperdistrictsublevelisextractedforward.Atthesametime,thepeakofsideabutmentpressureistransferredtothedepthawayfromtheperipheryalongthedipdirectionandthecoalbodyunderthebigstructureliesinstress-relaxedareawherethegob-sideentryislaidout,asshowninFig.1.Thestabilityanalysisofthebigstructureofsurroundingrocksandfieldsurveysallshowthatthedeformationlawoftheroadwaydrivenalonggoafinfullymechanizedtop-coalcavingfacesobviouslydiffersfromotherkindsofentries.Themaincharacteristicsarelistedasfollows[1,2].Fig.1Thestructurerelationshipbetweengob-sideentryandoverlyingstratainafullymechanizedtop-coalcavingface(1)Duringtheperiodofroadwayexcavation,thedeformationlawofthegob-sideentryinafullymechanizedtop-coalcavingfaceissimilartothatofgeneralsoftrockroadway.Theroadwayexcavationplaysalittleeffectonthestabilityofthebigstructure.Thegob-sideentryoccurscertainvalueofdeformationbecausethestressaroundtheroadwaychangesandcomesoutstressconcentrationbyroadwayexcavation.(2)Duringtheperiodafterroadwayexcavationandbeforeminingeffect,thebigstructureofsurroundingrocksisstable