Page 187 - 《水资源与水工程学报》2023年第4期
P. 187
!34 " ! 4 # & ' ( ) & * + , - Vol.34No.4
2023 $ 8% JournalofWaterResources&WaterEngineering Aug.,2023
DOI:10.11705/j.issn.1672-643X.2023.04.22
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MNOPQ:TV223.2 7RSTU:A 7VWQ:1672643X(2023)04018308
Servicelifeoflimestoneslopesbasedondissolutionrate
2
1
1
2
3
LIZe,YANGYuanhao,LIUWenlian,XUHanhua,ZHANGXiaoyan
(1.FacultyofCivilEngineeringandMechanics,KunmingUniversityofScienceandTechnology,Kunming650500,China;
2.KunmingProspectingDesignInstituteofChinaNonferrousMetalsIndustryCo.,Ltd,Kunming650051,China;
3.FacultyofElectricPowerEngineering,KunmingUniversityofScienceandTechnology,Kunming650500,China)
Abstract:Thepredictionofslopeservicelifecanquantitativelyandaccuratelyevaluatethelongterm
safetyoflimestoneslopes,butitspredictionmodelisnotyetfullydeveloped.Therefore,inordertosolve
theproblemofservicelifecalculationoflimestoneslopes,anoptimizationmethodbasedondissolution
rateisproposed.Takingtheservicelifeoflimestoneslopeastheobjectivefunction ,theeffectivelength
ofthepenetratedsectionandnonpenetratedsectionandtheshearparametersofthestructuralsurfaceaf
terseveralyearsofservicewerecalculatedaccordingtothedissolutionrateandtheattenuationrateofthe
shearparameters.Combinedwiththeequilibriumequationoftheslidingbodyandtheyieldconditionsof
thepenetratedandnonpenetratedsectionofthestructuralsurface ,thestablenonlinearmathematicalpro
grammingmodelofthelimestoneslopeforlongterm servicewasestablished ,andthenthemodelwas
solvedbythe“sequentialquadraticprogrammingmethod”toobtaintheservicelifeoftheslope.Accord
ingtothecomparison,themeanrelativeerrorbetweenthenumericalsimulationresultsofthefiniteele
mentmethodandtheproposedalgorithmis2.47%,indicatingthatthealgorithmcanaccuratelypredict
theservicelifeoflimestoneslopes.
Keywords:limestoneslope;servicelife;dissolutionrate;slopestability;nonlinearmathematicalpro
grammingmodel
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