Page 187 - 《水资源与水工程学报》2024年第2期
P. 187

!35 "!2 #                         & ' ( ) & * + , -                               Vol.35No.2
               2024 $ 4 %               JournalofWaterResources&WaterEngineering                 Apr.,2024

            DOI:10.11705/j.issn.1672-643X.2024.02.21


                   12 34567 PBM89:;<=>?4@


                                                1          2         2         2
                                         !"# , $%& , '() , *+,
                    (1. 0e%f1& G&g, Y0 0e 710054;2. 0e%f1& hij]kLM&g, Y0 0e 710054)
               A B: _`abTlRSAB^&mn、 opqrstuvP;<wx, yz{1|}~。pP_`ab€_
               ‚cƒ;<l„…ƒK†‡„ˆƒ, ‰Š‹ŒŽI‘qr€_‡’TOP“”, ab•–—˜™šr›œ
               žjŸ „ˆ¡¢£1¤¥。¦§, ¨O†‡ ”Ndƒ©ª«P_`IJcƒ, ¬­®¯†‡„ˆ°±²³´µ
               “”P¶·¸ªa¹(PBM) qr€_, º»NO”Ndƒ(RSM) RSº‡’TO¼a¹„½šr€|P“”¾¿,
                                                                              
               ÀÁª«ABšr›œžÂ²ÃÄ PBM€_‚ÅM。ªÆÇÈ: Éa| E jÊ–Ë k/k¼Ìna| E “”
                                                                                          s
                                                                                        n
               ´µ;k/k、 ÍÎÏÐÑ_ μ 、 ÀÒÓÔÕx R ¼Ö×Ë ν“”´µ; ¸Ø^ c jƒÙ¸ªÚ– σ c Kº‡’TO¼Û
                     n
                                                  min
                       s
               ÜÝÞږ UCS “”´µ, NO”NdƒßàIJá²Pqr€_Pab`j„ˆ`â¤ã¼`Òä 7%, ™Š‹N
               ^Nåæç^&mè©é, šr›œž©2, êÈë²P PBMqr€_‚ÅM³ì%&nQíîn。
                                                                             2D
               CDE: qr€_‚; †‡ ”Ndƒ; ¶·¸ªa¹; ŠïÓÔÅMð (PFC )
               >FGHI:TU45;TV16   JK<LM:A    JNOI:1672643X(2024)02018309
                             Applicationoforthogonal-responsesurfacemethod
                                   toPBM mesoscopicparametercalibration

                                                           2
                                             1
                                                                           2
                               ZHANGHuimei,MAZhimin,CHENShiguan,WANGFuyu                  2
                  (1.CollegeofSciences,Xi’anUniversityofScienceandTechnology,Xi’an710054,China;2.CollegeofArchitectural
                           andCivilEngineering ,Xi’anUniversityofScienceandTechnology,Xi’an710054,China)
               Abstract:Asthemainapproachtostudyingtherockmechanicalpropertiesandrevealingtheevolutionofme
               socracks ,numericalsimulationmethodsarewidelyadoptedanddiscussed.Theexistingnumericalsimulation
               parametercalibrationmethodsaremainlytrialanderrormethodsandorthogonaltestmethods ,bothofwhich
               failtofullyconsidertheinfluenceofmesoscopicparameterinteractions,resultingininaccuratesimulationre
               sultsandinconsistencywithlaboratorytestsintermsofmacroscopicfailuremodes.Therefore,thenumerical
               analysismethodcombiningorthogonal-responsesurfacemethodisadopted.Firstly ,theparallelbondmodel
               (PBM)mesoscopicparameterswithsignificantinfluenceareselectedbyorthogonaltest.Secondly,there
               sponsesurfacemethod(RSM)isusedtostudytheinfluenceoftheinteractionsbetweenmesoscopicparame
               tersonthemacroscopicparametersofthemodelsample.Finally ,asetofPBMparametercalibrationprocess
               isproposedincombinationwiththemacroscopicfailuremorphologyoftherock.Theresultsshowthateffective
                         
               modulus(E ),stiffnessratio(k/k)andtheirinteractionshavesignificanteffectsonelasticmodulus(E);
                                           n
                                              s
               k/k,contactfrictioncoefficient( μ )andminimumparticleradius(R )haveasignificanteffectonPois
                                                                          min
                   s
                n
                                                                             )andtheirinteractionsonuniaxial
               son’sratio( ν );theinfluenceofcohesion(c),normalbondstrength( σ c
               compressivestrength (UCS)issignificant.TheerrorbetweenthesimulatedresultsbyRSMandexperimental
               resultsofthereferencesofthemesoscopicparametersislessthan7%,thecharacteristicsofthestress-strain
               curvesofthetwoareconsistent ,andthemacroscopicfailuremodesarethesame,whichprovesthatthepro
               posedcalibrationprocessofPBMmesoscopicparametersisaccurateandreliable.
                !"#$:20231024; %&#$:20240220
                '()*: !"#$%&'()*(12172280)
                +,-.: +,-(1968—), ., /0123, 45, 67, 4589:, ;<=>?@ABCDEFGHIJKLMNO
                        P6&QRSLT。
                /0+,: UVW(1999—), X, Y0Z[3, \5RS8, ;<=>A]^&K_`abcdPRS。
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