【摘要】 文章利用有限差分程序FLAC,定量化讨论了边坡岩体(软岩)的变形模量、泊松比、密度、粘聚力、内摩擦角、边坡高度等参数对软岩边坡变形的影响。研究表明,边坡位移随变形模量E的增大而减小;泊松比μ的增加,则会引起x方向的位移的增加,y方向的位移减小;而岩体密度对岩石边坡位移的影响甚弱。边坡岩体的粘聚力c对边坡变形的影响程度与岩体的其他参数间存在很大关系。内摩擦角对边坡位移的影响大小,则取决于粘聚力c的取值。此外,随着边坡高度的增加边坡变形则会随之增加。其中x方向位移变化对边坡高度的变化更为敏感;同样,在边坡岩体其他参数不变的情况下,边坡倾角越大,边坡变形也越大。更多还原

【Abstract】 Using the difference code of FLAC,this paper discussed the relationship between soft rock mass parameters and slope deformation.These parameters include deformation modulus,Poisson’s ratio,density,cohesion,friction angle,and slope height.The results indicate that the slope deformation decreases with the increase of the deformation modulus and the increase of Poisson’s ratio,but horizontal displacement slightly increase.Density of rockmass influence the slope deformation lightly.The infuence of cohesion on slope deformation is related to other parameters,and that of friction angle depends on cohesion.In addition, shape of the slope will also influence the rock slope deformation.The greater height and steeper angle the slope,the stronger the deformation will be.更多还原