This paper presents a physical investigation and mathematical analysis on mechanical behavior of the regular jugged discontinuity.In particular,we focus on the creep property of structural plane with various slope ang...This paper presents a physical investigation and mathematical analysis on mechanical behavior of the regular jugged discontinuity.In particular,we focus on the creep property of structural plane with various slope angles under different normal stress through shear creep tests of structural plane under shear stresses.According to the test results,the shear creep property of structural plane was described and the creep velocity and long-term strength of the structural plane during shear creep were also investigated.An empirical formula is finally established to evaluate shear strength of discontinuity and a modified Burger model was proposed to represent the shear deformation property during creep.展开更多
基金This work was supported by National Natural Science Foundation of China(51168005,51268003)Key Project of Guangxi Scientific Research and Technological Development Plan(10124006-10)+2 种基金Key Project of Guangxi Science and Technology Lab Center(LGZX201107)Natural Science Foundation of Guangxi(2012GXNSFAA053205)Foundation Project of Guangxi Key Laboratory of Disaster Prevention and Engineering Safety(2009TMZR004,2012ZDX08).
文摘This paper presents a physical investigation and mathematical analysis on mechanical behavior of the regular jugged discontinuity.In particular,we focus on the creep property of structural plane with various slope angles under different normal stress through shear creep tests of structural plane under shear stresses.According to the test results,the shear creep property of structural plane was described and the creep velocity and long-term strength of the structural plane during shear creep were also investigated.An empirical formula is finally established to evaluate shear strength of discontinuity and a modified Burger model was proposed to represent the shear deformation property during creep.
