颗粒流软基上岩石破坏机理-国际会议讲稿

1stInternationalPFCSymposiumInvestigationofthefailuremechanismsofhard,competentrocklyingonasoft,incompetentbasebyPFC2D

J.KrastanovICConsulenten,Vienna,AustriaA.Preh&R.PoiselInstitutforEngineeringGeology,ViennaUniversityofTechnology,Vienna,Austria

stInternationalPFCSymposiumNumericalModelinginMicromechanicsviaParticleMethods/Sheet:1Failuremechanism:

HardrocklyingonasoftbaseElbe–Nordböhmen:competentsandstoneonamarlybaseMeteoramonastery:sandstoneonclaystInternationalPFCSymposiumNumericalModelinginMicromechanicsviaParticleMethods/Sheet:2Modeltestcompetentbase:humitsandincompetentbase:silicon-caoutchoucstInternationalPFCSymposiumNumericalModelinginMicromechanicsviaParticleMethods/Sheet:3PFC-ModelstInternationalPFCSymposiumNumericalModelinginMicromechanicsviaParticleMethods/Sheet:456789101112LandslideMurauMuraustInternationalPFCSymposiumNumericalModelinginMicromechanicsviaParticleMethods/Sheet:13GeologicalconditionsstInternationalPFCSymposiumNumericalModelinginMicromechanicsviaParticleMethods/Sheet:14ModelingprocedurestInternationalPFCSymposiumNumericalModelinginMicromechanicsviaParticleMethods/Sheet:15GenerationoftheballassemblyParticledistribution:Rmin=1.10mRmax=1.32mPorosity=16%stInternationalPFCSymposiumNumericalModelinginMicromechanicsviaParticleMethods/Sheet:16ReductionoftheisotropicstressTheisotropicstress,0,ofaparticleassemblyisdefinedasthemeanofthedirectstresses.Acorrectin-situstressstateisofcriticalsignificancewhencalculatingfailure.Whenthestateofstresscreatedbytheradiusexpansionisnotsmallenougth,gravitationalonedoesnotcreatecorrectinitialstresses.Forthisreason,thestateofstresscreatedbyradiusexpansionwillreduceasmuchaspossiblebyfurthermanipulatingthediameteroftheballs.Theconceptofstressinadiscontinuousmediumisdifferentfromthatinacontinuum.Thereisnomeaningtotheterm“stressatapoint,”becauseforcesmayfluctuatewildlyfrompointtopoint.Anestimateofstressisonlypossibleoverafinitevolumeofspace.StressintheparticleNumberofparticlesstInternationalPFCSymposiumNumericalModelinginMicromechanicsviaParticleMethods/Sheet:17ReductionoftheisotropicstressConvergencetoandesiredisotropicstressBoxwithmeasurementspheresAradius-manipulationalgorithmisappliedtoallballsiterativelytominimizetheisotropicstress,whichismeasuredwithinthecircles(2D)orspheres(3D).Theisotropicstressismeasuredinseveralmeasurementcircles/spheres.stInternationalPFCSymposiumNumericalModelinginMicromechanicsviaParticleMethods/Sheet:18EliminationofthefloatingparticlesFloatingparticlestInternationalPFCSymposiumNumericalModelinginMicromechanicsviaParticleMethods/Sheet:19Ma撕te史ri叔al渣C展al歉ib乏ra置ti证onMa牧cr殖op惊ar只am喝et感er仰sde是te蕉rm稿in枪ed锅b子y代FL月AC(l饭im睁it鞭e昼qu按il恋ib撞ri尘um贱)Mi俗cr哥op赔ar宫am安et仁er堡sEcjstRe职la缴ti蜘on闻b吃et青we皂en谊M黎ac桃ro心-滔an谈d帅Mi熊cr紫op晒ar亲am平et谣er忠sca钓li谅br早at素io址n标pr疤oc极es奖sst江I剪nt糟er宾na翠ti川on株al欲P以FC丑S第ym槽po莲si警um祥Nu尤me混ri劣ca载l招Mo趟de腥li疏ng乱i刑n士Mi杆cr覆om周ec箱ha隙ni魄cs惜v知ia枝P怎ar类ti嘱cl面e吐Me半th塔od妥s竞/冤Sh稿ee苹t:汽2互0Ge搏ne挤ra冲ti畏on凉o境f稼th谅e著ba回ll股a狂ss湿em狸bl粮y30票x6身0mst创I臣nt山er删na痒ti赔on抽al晋P她FC拒S攻ym榨po挣si糠um第Nu亮me叛ri滔ca角l评Mo眼de腰li鸽ng听i通n丙Mi码cr谨om烂ec湿ha折ni命cs肆v惜ia苍P孤ar纷ti湖cl低e王Me滥th效od侮s凤/伟Sh螺ee阵t:气2洗1Ma呈te锁ri窄al鞭C屋al杏ib米ra签ti猪onBr虹az作il倚ie煮n款Te凭stTr六ia听xi阅al功T只es妖t--装>巧c,j,E--部>Th劫emi辫cr念op号ar笨am泰et碗er闲swe肝re抹c喝al搂ib漏ra慌te马d愿wi妇th馋t吸he楚h拾el竞p摊of名s旨im剃ul箩at铅ed跌m择at储er什ia锄l欲te欠st崭s殖(B震ia猪xi烟al辈a未nd休B变ra汤zi特li贞an跳)祖de撑ve史lo硬pe翼d抱by卫I堂ta常sc损a鸟Co蜻ns串ul赵ti的ng赛G俩ro骑up熟,贡In雁c.In泊t卧he姻c杏as右e臣of提M胸ur拐au删t约he颠c向al迹ib终ra患ti份on建o畜f熄th滚emi寇cr夺op魂ro弹pe爪rt押ie鼠swa建s娘pe严rf鸡or眉me璃d瞧on茂a30朗b明y茂60污mte其st缘瑞s叛pe蛮ci局me粥n.尺S辫er哗ie饼s档of怠s烤im榜ul啦at辫io绘ns绍w遍er冲e方pe谜rf抽or塑me老d说to岩f继ou防nd餐t漂hemi书cr砍op毕ro拍pe缘瑞rt络ie普s(pa仇rt工ic动le前a础nd夹b能on坐d旬st席if启fn众es研se番s,夫p授ar械ti奏cl添e露fr户ic胃ti走on给c逮oe尾ff康ic泪ie锡nt他s扔an奋d恶bo穴nd疗s缎tr括en附gt透hs)wh共ic铜h双co稠rr派es抱po核nd爹t鲁o煤th沈e增de餐si作re据d嫌se搭t盲ofma趴cr乡丰op党ar古am铲et志er孟s(s笨uc控h教as责e托la识st侍ic叨c区on摇st喊an泥ts宪,色ma勿te陈ri发al省f岭ri问ct贤io米n央an阁gl浅e睛an四d姑pe遵ak坚-s汤tr品en垂gt数h葱en咬ve雄lo眯pe虹)st绒I快nt员er遣na脆ti最on劳al统P放FC乡丰S铃ym忧po阿si海um敏Nu构me浓ri汉ca临l问Mo难de潜li狗ng渠i虽n伯Mi羽cr率om鼓ec俯ha斑ni限cs涨v它ia峡P国ar同ti探cl键e秧Me绸th区od赴s孙/次Sh渴ee晒t:忆2暂2Mi艰cr馋op歉ar区am手et性er舅s刊us堂ed熔i谋n跃th按e室P督FC翠c商al烟cu铺la脂ti言on塞sMa搜cr氧op养ar库am迫et拥er戏sMi肉cr谣op犬ar满am佛et泻er锡sst坑I昂nt肥er崇na样ti屑on题al许P与FC腊S后ym侄po绍si非um刷Nu精me蓄ri能ca火l废Mo虫de肚li稼ng浊i太n协Mi迷cr电om蓄ec吹ha脾ni剩cs谣v狭ia销P突ar跨ti梯cl社e显Me句th止od仁s宰/钥Sh射ee灵t:杂2渐3Re楼gi诊on丝式s功of霸c贿ur旦re售nt册ly鹅a冶ct舰iv裂e恰cr猴ac逼ksst夺I匀nt坛er猎na抄ti浑on排al跨P顺FC仇S丸ym须po提si赛um在Nu每me膝ri叛ca渔l类Mo谅de揉li研ng源i颠n杀Mi末cr去om倘ec熔ha纺ni躲cs伯v图ia孩P掉ar善ti居cl择e符Me净th测od甚s殊/煌Sh帽ee掘t:棍2画4In遥it养ia卧l逗st柏at能e经of瓦t停he纲s翅lo捞pest锯I游nt吓er甜na熔ti撕on葡al岸P件FC版S坏ym灭po圈si风um痰Nu掠me肤ri宵ca孔l提Mo娱de阵li洲ng值i要n恳Mi屑cr若om埋ec较ha敏ni另cs辨v侦ia纷P匀ar垫ti雄cl役e煮Me凡th串od长s澡/梅Sh铺ee约t:庸2荒5Fa钻il遮ur树e趟(1蜂50号.0丛00洁s淘te贼ps晃)st察I蚊nt滴er龟na厚ti史on驾al化P巴FC婶S瓜ym大po纺si端um如Nu华me赢ri功ca荒l月Mo贩de敢li所ng罪i蚀n特Mi炒cr昼om斥ec锦ha共ni疏cs疫v乱ia悟P防ar废ti改cl貌e演Me编th似od粮s悉/扎Sh仪ee广t:老2防6Fa阶il蒙ur亲e绿(6偷50激.0惑00幸s捞te欢ps枝)st傅I竞nt挂er迁na罢ti丢on咸al韵P典FC咽S因ym泡po达si坛um艇Nu幕me拼ri毫ca坑l捧Mo岂de研li行ng气i旨n帮Mi的cr晨om临ec弹ha幅ni池cs丈v地ia亮P租ar箱ti例cl路e斩Me蕉th毫od棕s纲/涌Sh债ee宋t:瘦2还7Lo历ca秋ti匙on庙o凶f舌th狠e堵me倍as习ur妹in木g松di忧st非an候ce扬sst袄I僵nt掉er束na塞ti踢on蚕al胖P丈FC貌S厚ym唱po醋si延um马Nu串me添ri倾ca券l农Mo废de析li央ng伐i死n编Mi琴cr态om摩ec尝ha抹ni百cs乌v骄ia确P售ar耐ti甘cl脏e舌Me裳th移od继s怜/炉Sh看ee贴t:陕2私8Ex踩te芒ns喉io呢n贝of乡丰t珍he娃m技ea堤su茶ri基ng肆d而is罚ta宪nc粉esst创I疯nt毁er记na盏ti基on唤al舌P逐FC豪S尘ym役po皇si忘um外Nu撤me渗ri茧ca管l币Mo刺de丘li桨ng定i栽n寸Mi娃cr贤om什ec袖ha乔ni嫩cs绵v猴ia陷P汤ar姜ti亦cl士e集Me嫌th笨od仗s锦/有Sh叉ee胳t:烧2斥9X-闭di求sp