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:,,1972,1995,,048021,:2006-09-11():()SGW40TAM50650,,,,,,:;;:TD82:A:1004-6429(2006)06-0129-02400,20km1995,,,,,,,,7,()SGW40TAM50650,,,,,11.1:SGW40T:SJ80:SZZ650/7.5:AM50:KBSGZY500/660BQD1080ABQD120ABQD200ABQD23315UPQ3370+1325:28kW2315kW500,1.21)SGW-40T,,,;,,;,,2),,;,3)SJ80,;,4):,;,,,,,100mm,,,,,,,5)660V,,,,,;,,,UPQ337080A,,6),;,,,,22.1SGW40T1),,,,2)902M20M24,320#921SHANXISCIENCEANDTECHNOLOGY200661120,,,,3),SGW40T:,,:,,2.26501)M24,,2)650350mm300mm,300mm,650SJ80,6502.3SJ-801),8,2)12#,,2.4AM501),,,,,,,360mm540mm,50%,66.7%,190mm320mm,,,,,610,2):150650,8M24,,3),,120mm,,,,,,,,,4),,,(),,,,5),,,16,10#,27,20,,6),();;;,(),,2.5,,80,,1)80AQBZ80A(1140V/660V),,,2)660V1140V,UPQ70UPQ95,800m1400m,,2.6,,,,,1),,,,,,,,,,,,,,2),SDF2337kW2355kW,700m1300m,3),,,3a),,,,250h(),70b),;,50m100mc),,,400,550d),(:)(132)031200661120SHANXISCIENCEANDTECHNOLOGYh,n,n32.2,,,,n,n2.3,,,,,n,,,,,,,f2,(4),,n3,:a),,,,,32mm,8tBZ15,,,b),,,,,,3m;(1m2m),,,,1m;,,c),,,,,,,,(:)TheCauseofFormationandTreatmentforSteelTrunkFloatingAccidentsGeneratedintheProcessofCastingConcreteoftheBoredGroutPileLiYunfengABSTRACT:Theboredgroutpileisbeingwidelyusedinthecurrentbridgeengineering.Incastingcon-crete,theaccidentsofsteeltrunkfloatingoftentakeplace;andtheproblemisverytroubletodealwith.Ifnotproperlytreated,Itwillleadtomajorqualityaccidentandheavyeconomicloss.Thispaperanalysesthecontributingfactorsofthespecialaccidentsandthecorrespondingtreat-ments,whichhavepracticalmean2inginguidingconstruction.KEYWORDS:boredgroutpile;castingconcrete;steeltrunkfloating;contributingfactor;treatment(130)StudyontheTransformingPracticeoftheIntegratedTunnelingEquipmentinChengzhuangCoalMineLiuPushengABSTRACT:Thisarticlehasintroducedthetransformationofthepowersupplysystem,theairsupplyfortheworkface,SG-40Tscraper-troughconveyer,AM50integratedtunnelborerand650transitionscraper-troughconveyermatchingtheborermadeinChengzhuangCoalMineofShanxiCoalGroupovertheyears.Thetransformationhaveimprovedthecomprehensiveproductioncapacity,reducedelectromechanicalacci2dents,lengthenedtheservicelifeofequipmentandsavedmaintenancecost,withtechniquesandmatchingplansforintegratedtunnelingequipmentsuitableforthelocalconditions,whichmayprovideequipmentguaranteeforefficientproduction.KEYWORDS:integratedtunneling;equipment;matching231200661120SHANXISCIENCEANDTECHNOLOGY