21m厚煤层综放开采技术研究

21m21m1:7.480%529020m21mSubject:TechnicalResearchofOnceMiningFullHeightof21mCoalSeaminFully-MechanizedTopCoalCavingSpecialty:GeotechnicalEngineeringName:QingDule(Signature)Instructor:WangXiaoli(Signature)ABSTRACTInthefaceofself-igniteextraordinaryofMaTiGouMine,inordertodischargewhole21meterstopcoal.Inthistextwehaveanin-depthresearchingordiantechnique.Throughexaminationofsofteningtop-coal,wemakecertaindisposingofsofteninglanewayalongpolarity,softeningwayofsubareaindependentsoftening,dynamiteparameteranddynamitetechnics.Throughexaminationofwinningandresearchoftechnics,wefindoutruleofmotionanddischargingoftop-coal,confirmofparameterofdischargingandway.Throughresearchoftwo-shoringofworkingfaceandfireproofing,wegetoutprojectofshoringandfireproofing,andforthefirsttimebringforwardtheoryofdepressurizationwithanchoreye.wealsoresolveshoringandfireproofinginhighgroundpressureandself-ignite.Throughlocalemeasureofrockthrustandtheoreticalanalysis,wefindoutregulationofvisualizeofrockthrust.Soweputforwardalogicalmeansofdominatingrockthrust.Afterthistopichasbeenputinpractice,compareexcavatetodischargeis1:7.4,recoveryratiooverrun80percent,totalityeconomicbenefitamountto5290myriayuan.Throughresearchofthistext,wehavethoroughlysolvedwayofmineMaTiGouCoalMineandforalongtimecontinuancetensionlayerminingbeonfireseriouscoeffinceintofrecoverylownessandoutputinlow-level,benefitandefficiencyinlow-level,sovledtechnicalproblemsandensuremineregularproduction.thisresearchestablishafinefoundationforonceminingfullheightof20mcoalseaminfully-mechanizedtopcoalcaving.Keyword:21mcoalseamHardcoalFully-mechanizedtopcoalcavingSofteningwithdynamiteDominanceofrockthrustThesis:ApplicationI1............................................................................................................................................11.1.............................................................................................................21.2....................................................................................................41.3..............................................................................................................41.3.1............................................................................41.3.2............................................................................41.3.3........................................................................51.3.4...............................................................................................51.4......................................................................................................52................................................................................................62.1..........................................................................................................................62.1.1........................................................................................................62.1.2................................................................................................72.2..........................................................................................................82.2.1....................................................................................................82.2.2....................................................................................82.2.3................................................................................................92.2.4........................................................................................................92.2.5..............................................................................................132.2.6..........................................................................................142.3........................................................................................................162.3.1.............................................................172.3.2.............................................................................................172.3.3..................................................................183..............................................................................................193.12513...................................................................................................193.1.1..........................................................................................................193.1.2.........................................................................................203.1.3..............................................................................................................213.1.4.........................................................223.1.52513.........................................................................................22II3.22512................................................................................................233.2.1.................................................................................................