三峡库区水平岩层岸坡变形破坏机制的数值模拟研究.docx

三峡库区水平岩层岸坡变形破坏机制的数值模拟研究
摘要：
本文利用数值模拟方法研究了三峡库区水平岩层岸坡的变形破坏机制。首先，根据三峡库区岸坡的地质条件，建立了岩层岸坡数值模型；其次，通过欧拉法对岸坡模型进行了应力-应变分析，得出了岸坡的应力、应变、变形等参数；最后，通过分析模拟结果，提出了岸坡变形破坏的机制。
研究表明，岩层岸坡中存在着明显的水平应力、垂直应力和剪切应力，这些应力的分布不仅受到岸坡的形态和结构的影响，还受到库水位和流量等因素的影响。此外，岸坡的变形和破坏不是单纯的剪切破坏，而是由多种因素综合作用而产生的复杂破坏模式。
本研究对于加深人们对三峡库区岸坡变形破坏机制的认识具有一定的意义，对于岸坡的安全防护和工程设计提供了理论依据。
关键词：三峡库区；岸坡；水平岩层；变形破坏；数值模拟
Abstract:
Inthispaper,thedeformationandfailuremechanismofhorizontallayeredslopeinThreeGorgesReservoirareawerestudiedbyusingnumericalsimulationmethod.Firstly,accordingtothegeologicalconditionsoftheslopeinThreeGorgesReservoirarea,thenumericalmodeloftheslopewasestablished.Secondly,thestress-strainanalysisoftheslopemodelwascarriedoutbyEulermethod,andthestress,strainanddeformationparametersoftheslopewereobtained.Finally,themechanismofslopedeformationandfailurewasproposedbyanalyzingthesimulationresults.
Thestudyshowedthattherewereobvioushorizontalstress,verticalstressandshearstressinthehorizontallayeredslope,andthedistributionofthesestresseswasnotonlyinfluencedbythemorphologyandstructureoftheslope,butalsobythewaterlevelandflowrateofthereservoir.Inaddition,thedeformationandfailureoftheslopewasnotasimpleshearfailure,butacomplexfailuremodecausedbymultiplefactors.
Thisstudyhasacertainsignificanceindeepeningpeople'sunderstandingofthedeformationandfailuremechanismoftheslopeinThreeGorgesReservoirarea,andprovidingtheoreticalbasisforthesafetyprotectionandengineeringdesignoftheslope.
Keywords:ThreeGorgesReservoirarea;slope;horizontallayered;deformationandfailure;numericalsimulation.