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简介:摘要:高炉护炉一般不可避免的会造成炉况的波动甚至难行,对高炉的经济技术指标也会有不小的负面影响。唐钢 2000m高炉在维持稳定顺行可持续发展的前提下,保持了正常的经济技术指标,达到了良好的护炉效果,是对护炉优化的一次尝试。
简介:DetailedexaminationofhistoricaldataofearthquakesandfieldinvestigationsofloesslandslidecausedbytheearthquakeandtracingofactivefaultsinLanzhouareaindicatethattheYijitanputown,oneofsixtownsofJinchengcity,wasdevastatedbythe1125Lanzhouearthquake.ThecitlyisnowlocatedintheVinylonFactorysouthofHekou(RiverMouth)intheXigudistictofLanzhoucity.WedelerminedthatthesixoldtownsmentionedinhistoricalrecordslieinanareastretchingfromthesouthofXigudistricttoHekouinLanzhou.Thisisconsistentwiththedistibutionofloesslandslidescausedbytheearthquake,theextensionofHoloceneactivefaults,andthedistributionoftracesoftheseismicrupturezone.Acomprehensiveanalysisshowsthattheseismogenicstructureforthe1125LanzhouM7.0earthquakeshouldbetheXianshuigoufaultsegmentatthewesternterminationofthenorth-borderactivefaultzoneoftheMaxianshanMountainswhicharelocatedinsouthofLanzhoucitywiththedistanceofonly4km.
简介:Relationshipbetweenfaultsandgenerationofinlandshallowearthquakes:enlighten-mentoftheM=7.2southernHyogoprefec-tureearthquakeTO...
简介:Amoredetailedanddeep-goinganalysisoftectonicconditionsforthe1989BohaiSeaM7.4earthquakeareahasbeenmadebasedonthedataofoilgeologicalexplorationandresultsofseismologicalresearches.TheobtainedresultfillsthegapinseismotectoulcresearchofLargeBohaiSeaearthquakeareaofNorthChina.TheearthquakeareaislocatedintheeasternpartofCenozoicriftedbasinoftheBohaiGulf,alongtheintersectionzonebetweentheNNE-trendingYingkou-WeifangfaultzoneandtheNW-trendingBeijing-Penglaifaultzone.IntheearlyTertiaryfault-depressionstage,threesetsoffaults,theNNE-,NW-,andW-E-trendingfaults,weredevelopedintheuppercrustinthearea.Theyarelistricandplanarintheform,ofnormalfaultcharacterandmostlythemajorfaultsinfaulteddepressions.Inthefault-depressionstagesincelateTertiary,thepreexistingfaultshaveundergonemovementtodifferentextent.Meanwhile,anewNE-trendingHuanghekou(YellowRiverMouth)-Miaoxibeifaultzonewasdeveloped.ThefocalfaultingoftheM7.4earthquake,strikingtoN45°EanddippingtoSE,isnearlyvertical,withdextralstrike-slipnature,andburieddowntodepthof15~34km.TheseismogenicfaultforthelargeearthquakeisnottheYingweifault,butthenewlygeneratedHuanghekou-Miaoxibeifault.
简介:At19:33p.monSeptember27,2003,anearthquakewithM7.9occurredintheRussiaMongolia-ChinaboundaryRegion.ItwasstronglyfeltintheAltayregionofXinjiang.Thelossescausedbytheearthquakewas76millionyuan(RMB).Someinformationabouttheearthquakewasoutlined,includingbasicparameters,focalmechanism,evaluationofearthquakedisasterlossesandsoon.Thesatelliteremotesensinginformationworkedinitialanalysisfordeformationofgroundandfailurephenomenon.
简介:TostudytheTaiwanStrait(TS),anunusualseaarea,thenumericalmodelinmarginalseasofChinaisusedtosimulateandanalyzethetidalwavemotioninthestrait.ThenumericalmodelingexperimentsreproducetheamphidromicsystemoftheM2tideinthesouthendoftheTaiwanstrait,andconsequentlyconfirmtheexistenceofthedegenerateamphidromicsystem.Onthisbasis,furtherdiscussionisconductedontheM2systemanditsformationmechanism.ItcanbeconcludedthatthetidalwavesoftheTSisconsistedoftheprogressingwavefromthenorthentranceandthedegenerateamphidromicsystemfromthesouthentrance,inwhichtheprogressingwavefromthenorthentrancedominatesthetidalwavemotioninthestrait.Exceptfortheconvergenteffectcausedbythelandformandboundary,thedegenerateamphidromicsystemproducedinthesouthofthestraitisanotherimportantfactorforthefollowingphenomena:thelargetidalrangeinthemiddleofthestrait,theconcentrativezoneofco-amplitudeandco-phaselineinthesouthofthestrait.ThedegenerateamphidromicsystemismainlyproducedbytheincidentPacificOceantidalwavefromtheLuzonstraitandtheactionbytheshorelineandlandform.Thepositionoftheamphidromicpointiscompelledtomovetowardsouthwestuntildegeneratingbythepowerfulprogressingwavefromthenorthentrance.
简介:Usingthe78focalmechanismsolutionsoftheforeshocks,mainshockandaftershocksoftheearthquakesequencefortheYao'anearthquake,thecharacteristicsofthefocalfaultsandstressfieldfortheearthquakesequenceareanalyzed.TheresultsshowthatthemainruptureplaneoftheYao'anearthquakesequenceisatectonicfaultwithN50°Wstrikeandsteepdipandallthemainshock,theforeshocksandthevastmajorityofaftershocksoccurredonthemainruptureplane.AtectonicfracturewithNNE-NEstrikealsoparticipatedindevelopmentprocessofthesequencedominatedbyprincipalcompressionalstresswithnearlyhorizontalorientationSSEisconsistentwiththeregionaltectonicstressfield.Inthesequencedevelopment,thestressfieldinthefocalregionwascomplexwithmultiaximuthsandmulti-actionmodelsandthefocalruptureshowedcomplexfeatureswithmulti-directionsandmulti-patterns.
简介:AnearthquakewithM7.1occurredinYushu,QinghaiProvince,China,at07:49a.m.onApril14,2010,accordingtotheChineseSeismicStationNetwork.Thesequenceisafore-mainafter-shocktypesequence.AforeshockwithM4.7occurred2hoursand11minutesbeforethemainshock.Therewere12foreshocksand2385aftershocksuntilJune31,2010.Inwhich,thereare21aftershocksbetweenM3.0andM3.
简介:TheextensivedamagetobuildingscausedbytheNepalM_s8.1earthquakehasattractedmuchattentionbytheinternationalcommunity.AfterthepreliminaryscientificinvestigationsonthedifferentaffectedareasinNepal,theconstructionanddamagecharacteristicsoffivedifferenttypesofbuildingscommonlyexistinginNepalwerediscussedandthereasonsoftheirdisasterperformancewereanalyzed.Typesofbuildingsinvestigatedincludereinforcedconcrete(RC)framestructures,rubblestructures,brick-woodstructures,rawsoilstructures,andbrick-woodstructuresofhistoricbuildings.Inaddition,theweaklinksoftheseismicdesignwerepointedout,whichwasveryimportantforthepost-earthquakereconstructionandrecovery,andgaveapreliminaryexplanationsforthedamageexperienced.
简介:Thepost-earthquakerapidaccurateassessmentofmacroinfluenceofseismicgroundmotionisofsignificanceforearthquakeemergencyrelief,post-earthquakereconstructionandscientificresearch.TheseismicintensitydistributionmapreleasedbytheLushanearthquakefieldteamoftheChinaEarthquakeAdministration(CEA)fivedaysafterthestrongearthquake(M7.0)occurredinLushanCountyofSichuanYa’anCityat8:02onApril20,2013providesascientificbasisforemergencyrelief,economiclossassessmentandpost-earthquakereconstruction.Inthispaper,themeansforblindestimationofmacroscopicintensity,fieldestimationofmacrointensity,andreviewofintensity,aswellascorrespondingproblemsarediscussedindetail,andtheintensitydistributioncharacteristicsoftheLushan'4.20'M7.0earthquakeanditsinfluentialfactorsareanalyzed,providingareferenceforfutureseismicintensityassessments.
简介:枚举的算法被介绍了进ASR模型的恰当的过程。与M6基于21大地震的详细学习。8在中国大陆,在大地震前的地震紧张版本的统计特征被总结了。在团中,紧张版本模型能被划分成五种类型。第一是DA模型,紧张版本在更宽广的区域在加速并且在震中附近在小区域速度。约38%地震样品具有这种类型。第二是AD模型,紧张版本在更宽广的区域在速度并且与占据ratioof在震中附近在更小的区域加速约19%。第三是ASR,仅仅加速的紧张版本能在被观察。这个模型的盒子等于大约14%。第四是数据设置就绪,仅仅速度的紧张版本能在被检查,等于大约24%。仅仅有第五种类型(LSR)的一件地震样品,它显示出一个线性紧张版本。在持续时间有36年差别预先震惊在加速并且速度的模型之间的序列。在大地震一般来说是一个典型特征以前,这对小地震的增加的seismicity的一个背景意味着那地震静止。为DA模型,分别地,为稳定的加速并且速度的紧张版本的批评区域的平均尺寸关于到400km和100km的260km到200km3~5次,1~2预定大小7的地震的破裂尺寸。0。广告模型是DA模型的反面。模型参数,m价值,好稳定性。ASR的比率关于为加速地震紧张版本现象的一样,不管紧张版本模型是什么,或紧张版本数量怎么大。关于速度地震紧张版本现象,DA模型有最特殊的速度紧张版本特征并且是地震紧张版本的典型特征,我。e。“速度在里面加速外面地震紧张模型”。
简介:Thevariationinload/unloadresponseratiobeforesomemoderateearthquakesisanalyzedbasedonthetheoryoftheload/unloadresponseratio.Theresultsshowthattheload-unloadresponseratioincreasesnoticeablybeforemoderateearthquakes,andtherearethreekindsofpatternsinwhichtheload/unloadresponseratiovariesandthedurationofnoticeableincreaseinload/unloadresponseratiorangesfromhalfayeartotwoyears.