文档介绍：I 摘要结构面对岩体工程稳定性起控制作用。目前,对岩体结构面4种主要形态的力学特性研究集中于平直、波状以及锯齿状3种类型,但是对台阶状结构面力学特性及其注浆效果的研究还较少。本文通过理论分析、室内模型试验以及数值模拟相结合的方法,研究了1 台阶、2个台阶、1个台阶和1个锯齿相组合3种情况下岩石结构面注浆前后的力学特性。主要研究内容及结论如下: (1)以前人建立的力学模型为基础,推导了锯齿状结构面爬坡及啃断破坏下的剪力表达式、抗剪强度参数粘结力c 、内摩擦角?的表达式,推导了台阶状结构面压切破坏时的剪力表达式、抗剪强度参数粘结力c 、内摩擦角?的表达式。(2)通过注浆和未注浆岩石结构面室内模型试验,揭示了注浆加固结构面的内在机理为提高了结构面粘结力c 、内摩擦角?。(3)依据室内试验结果,建立了考虑开度的台阶状结构面剪切本构模型和剪胀模型, 并验证了模型的正确性。(4)结合室内试验和数值计算,。(5)通过对室内试验以及数值计算结果的分析,表明法向应力与抗剪强度近似呈线性关系,随着法向应力的增加,结构面抗剪强度随之增大。(6)室内试验结果表明,注浆后结构面抗剪强度平均提高了20%以上。综合室内和数值试验结果,注浆对提高结构面抗剪强度效果显著。(7)在数值计算结果的基础上,建立了适合于组合结构面的考虑非控制性爬坡角因子 ik 的修正摩尔-库仑公式。关键词:岩石结构面;注浆加固;剪切强度;本构模型;剪胀模型;修正摩尔-库仑公式 II Abstract The stabilityof rock mass engineeringismainlycontrolledby structural current study of structural plane concentrate onthree types includingstraight,undulantandserrate,but the research on mechanical propertyandgrouting effect of step_shaped structural planeis on theoretical analysis,sample testandnumericalsimulation,the mechanical propertiesof three types includingone step_shaped,two step_shapedand one step_shapedwith one serratestructural plane are investigatedpre-and-post main content and conclusions are as follows: (1)On the basis of the mechanical modelestablished by shearing stress,cohesion and friction expression of serratestructuralplane in climbing or shearing failure are expressions of step_shaped structural planein crush-cutting failure are also derived. (2)The essence of grouting reinforcement of structural plane is revealed through the shearingtest,that is the change of cohesion and friction. (3)According tothe results of sample test,fracture aperture’s shear constitutive model and shear-swelling modelare established,which coincidingwith test results. (4)Based onsample testand numeral simulation,the shear destruction characteristicof structural plane are analyzed which aspect