Page 173 - 《水资源与水工程学报》2024年第6期
P. 173

!35 "!6 #                         & ' ( ) & * + , -                               Vol.35No.6
               2024 $ 12 %              JournalofWaterResources&WaterEngineering                 Dec.,2024

            DOI:10.11705/j.issn.1672-643X.2024.06.17


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                 HIJKL:TV554 .14   MNOPQ:A    MRSL:1672643X(2024)06016909
                             Predictionmodelfortunnelliningpressurebasedon

                                     analyticalmodelsandmachinelearning

                                                                                     2
                                                                         2
                                                              1,2
                                            1
                                    XUYujie,WANGHuaning ,HUTao,SONGFei
                        (1.SchoolofCivilEngineering,SuzhouUniversityofScienceandTechnology,Suzhou215011,China;
                       2.SchoolofAerospaceEngineeringandAppliedMechanics,TongjiUniversity,Shanghai200092,China)
                 Abstract:Forhydraulictunnellinginrheologicalsoftrocks,timedependentsupportforcesarelikelyto
                 occurattherock-supportinterfaceduetotheinteractionsbetweenthesurroundingrocksandthesupport
                 structures.Abetterunderstandingofthemechanismiscrucialforthedesignofliningstructuresandthe
                 stabilityanalysisofsurroundingrocks.Numericalsimulationsofviscoelastic-plasticproblemsaretime
                 consumingduetothelargeconsumptionofcomputationaliterationsandpre/postprocessing ;mean
                 while ,theanalyticalapproachneedscomplexformuladerivationandprogramimplementation.Therefore,
                 bothmethodsarefarfrom satisfactionwhenitcomestoengineeringapplications.Inthisstudy,abig
                 groupofdatasetsareobtainedbasedontheviscoelastic-plasticanalyticalmodelforsupportedtunnels ,
                 withsixdifferentkeyparametersofmaterialpropertiesandgeometryinformationofthesurroundingrocks
                 andsupportstructuresasthefeatureparameters.Subsequently,adatadrivenmodelforpredictingstead
                 ystatesupportforcesisdevelopedbyLightGBM machinelearningmethod.Theresultsindicatethatthe
                 modeldemonstratesstablepredictiveperformanceonthetestset,withcalibrationdeterminationcoeffi
                 cientsforboththetrainingandtestsetsexceeding0.9 ,andmeanabsolutepercentageerrorsbelow
                4.2%,significantlyoutperformingothermachinelearningalgorithmssuchasXGBoostandSVR.Finally,
                 SHAPanalysisisappliedtoassesstherelationshipbetweeninputfeaturesandpredictedresults,further
                 enhancingthemodel ’sinterpretabilityandprovidingdeeperinsightsintofeaturecontributions.Insum
                 mary ,thedevelopeddatadrivenmodelcanrapidlypredictsteadystatesupportforces,anditcanbefur
                 therusedinthedesignofsupportstructuresandotherworksofinverseanalyses.

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