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1、新浪微博努力hard微信公众号HardPPT演界网店铺HardPPT骚一骚更精彩RockMassClassificationUNIT10RockMassClassificationUrbanUndergroundSpaceEngineeringUrbanUndergroundSpaceEngineeringHebeiUniversityHebeiUniversityofofEngineeringEngineering南阳哪里有治疗白癜风的医院郑州华柱白癜风医院是河南省新农合定点医疗机构,【微信号zzhznpx】咨询:0371-55833156,QQ ：851856908 采用专利口服（2012
2、102561459 ）专利外用（2012102561660 ）治疗白癜风，新农合报销【70%-30%】，地址：郑州市西大街一号(二七广场东行100米路北)。南阳专业白癜风医院http:/ the feasibility and preliminary design stages ofa project,whenvery little detailed information on the rock mass and its stress and hydrologiccharacteristicsisavailable,theuseofarockmassclassificationschemec
3、anbeofconsiderable benefit.Atitssimplest,thismayinvolveusingthe classificationschemeasacheck-listtoensurethatallrelevantinformationhasbeenconsidered. Attheotherendofthespectrum,oneormorerockmassclassificationschemecanbeusedtobuildupapictureofthecompositionandcharacteristicsofarockmass to provide ini
4、tial estimates of support requirements, and to provideestimatesofstrengthanddeformationpropertiesoftherockmass.Itisimportanttounderstandthattheuseofarockmassclassificationscheme does not ( and can not ) replace some of the more elaborate designprocedures.However，theuseofthesedesignproceduresrequires
5、accesstorelativelydetailedinformationoninsitustress，rockmasspropertiesandplannedexcavationsequence，noneofwhichmaybeavailableatanearlystageintheproject. As this information becomes available， the use of the rock massclassificationschemesshouldbeupdatedandusedinconjunctionwithsitespecificanalyses.LETS
6、GOPartOneEngineeringRockMassClassification工程岩体分类P88-89EngineeringRockMassClassification工程岩体分类Introductions读前介绍PartTwoTerzaghisRockMassClassification太沙基岩体分类P89-90Terzaghi我是太沙基太沙基KarlTerzaghi18831963现代土力学奠基人集教、研究、实践于一体重视工程实践对土力学的发展麻省理工维也纳高等工业学院伦敦帝国学院哈佛大学名誉博士学位9个获ASCE最高奖诺曼奖4次(唯一)专设太沙基奖与太沙基讲座(最顶尖)Intact
7、Rock完整岩StratifiedRock层状岩ModeratelyJointedRock中度节理岩BlockyandSeamyRock块状、有裂缝岩CrushedbutChemicallyIntactRock碎片岩（未受化学扰动）SqueezingRock挤压岩SwellingRock膨胀岩Descriptions相关描述PartThreeClassificationsInvolvingStand-upTime隧洞自稳时间分类P90SeveralConcepts几个概念Unsupportedspan无支护跨度1max(spanoftunnel,distancebetweenthefacean
8、dthenearestsupport)NATM新奥法2NewAustrianTunnelingMethodSeveralArguments几个观点aThestanduptimeforanunsupportedspanisrelatedtothequalityoftherockmassinwiththespanisexcavated.bAnincreaseinthespanofthetunnelleadstoasignificantreductioninthetimeavailablefortheinstallationofsupport.cNATM includes a number of t
9、echniques for safe tunneling in rockconditionsinwhichthestand-uptimeislimitedbeforefailureoccurs.dIndesigningsupportforhardrockexcavationsitisprudenttoassumethat the stability of the rock mass surrounding the excavation is nottimedependent.PartFourRockQualityDesignationIndex(RQD)岩石质量指标（RQD值）P90-91RQ
10、D什么是RQDPurpose目的目的AQuantitativeestimate提供一种数值评价方法Definition定定义BPercentofpieceslongerthan100mm大于100mm岩心长度百分比Measure方法方法CAtleastNWsizedouble-tubecorebarrel标准尺寸(直径54.7mm)双层岩心管Calculation计算方法Lengthofcorerun:200cmRQD=(38+17+20+35)/200100%=55%Forexample38.038.017.017.03.03.020.020.035.035.01.01.0Lengthofc
11、orerun:200cmRQD=(60+36+17+1)/200100%=(64)%Tryatry60.060.05.05.010.010.036.036.017.017.015.015.060+36+17+1564Calculation计算方法Palmstromsrelationshipforclay-freerockmasses（不含粘性土的岩体）RQD=1153.3JvJvforthesumofthenumberofjointsperunitlengthforalljointChangedbytheboreholeorientationUsevolumetricjointcounttor
12、educethisdependence.！Attention注意事项DeeresRQDWhenusingdiamonddrillcore,caremustbetakentoensurethatfracturescausedbyhandingorthedrillingprocess,areidentifiedandignored.12PalmstromsRQDForexposuremapping,blastinducedfracturesshouldnotbeincludedwhenestimatingJv.ConclusionRQD总结NorthAmerica（北美）DeeresRQDhasb
13、eenwidelyused,particularlyinNorthAmerica,forthepast25years.SomeattemptedtorelateRQDtoTerzaghisrockloadfactorsandtorockboltrequirementsintunnels.TheTheMostMostImportantImportantUseUseofofRQDRQD isisA A ComponentComponentoftheoftheRMRRMR. .新浪微博努力hard微信公众号HardPPT演界网店铺HardPPT骚一骚更精彩THANKYOUUNIT10RockMassClassificationUrbanUndergroundUrbanUndergroundSpaceEngineeringSpaceEngineering新浪微博努力hard微信公众号HardPPT演界网店铺HardPPT骚一骚更精彩声明本套作品所使用的模板源于互联网，并非本人原创本套作品所使用的模板源于互联网，并非本人原创新浪微博努力hard微信公众号HardPPT演界网店铺HardPPT骚一骚更精彩努力hard（HardPPT）http:/
