CAJ | 학술논문

岩体是由许多结构面组成的复杂结构体，受到剪切破坏时常有裂隙产生。为了研究裂隙岩体在滑落时的规律，深入讨论工程岩体内摩擦系数等效参数，基于摩尔库伦强度准则，假定最小主应力与最大主应力σ1～σ3为线性关系，以内摩擦系数为核心推导摩尔库伦强度准则情况下的等效模型。在此基础上，利用ABAQUS有限元分析平台，嵌入所提的等效模型，模拟试验中不同倾向、倾角的楔形块体滑落时的状态，深入讨论和分析了相关参数，并与实验室模型试验结果进行比较，得出所提等效模型可用于表征裂隙力学特性分析，验证了该模型适用裂隙岩体稳定性分析的结论。
암체시유허다결구면조성적복잡결구체，수도전절파배시상유렬극산생。위료연구렬극암체재활락시적규률，심입토론공정암체내마찰계수등효삼수，기우마이고륜강도준칙，가정최소주응력여최대주응력σ1～σ3위선성관계，이내마찰계수위핵심추도마이고륜강도준칙정황하적등효모형。재차기출상，이용ABAQUS유한원분석평태，감입소제적등효모형，모의시험중불동경향、경각적설형괴체활락시적상태，심입토론화분석료상관삼수，병여실험실모형시험결과진행비교，득출소제등효모형가용우표정렬극역학특성분석，험증료해모형괄용렬극암체은정성분석적결론。
Rock mass is made up of many complex structural planes .Fractures usually appear due to the shear failure .In order to study the regularity of fractured rock mass during the sliding process of rock blocks ,the equivalent parameters of internal friction coefficient of rock mass was deeply discussed .Based on the Mohr-coulomb strength criterion , it is as-sumed that maximum principal stress and minimum principal stress (σ1~ σ3 ) were in a linear relationship ,so as to de-duce an equivalent model concentrating on the internal friction coefficient f .On this basis ,the proposed equivalent mod-el was embedded in the finite element analysis platform ABAQUS ,to simulate the sliding state of wedge block with differ-ent dip angles and directions .With a thorough discussion and analysis of related parameters ,the results were compared with the ones obtained in laboratory experiments and the conclusion was drawn that the proposed equivalent model can be used for the characterization of mechanical properties of joints .It is verified that the equivalent model is suitable for ana-lyzing the stability of fractured rock mass .This study will provide valuable reference for the stability analysis of rock mass in engineering .