论文部分内容阅读
考虑不同高径比及充填节理特征等对岩石强度变形特性等的影响,在实验室中进行相似材料的模型试验研究。分别对完整试件,“十”节理试件和“井”节理试件进行单轴压缩和剪切试验,得到如下结论:(1)在压缩和剪切试验中,3组试件都表现出X状共轭斜面和单斜面剪切破坏,其破坏迹线总趋势相似;(2)完整试件受尺寸效应影响明显,节理试件受结构弱化影响显著,并且受充填物影响,节理密度与强度之间的比例关系不突出;(3)在2种节理试件中,弹性模量E和黏聚力c无明显变化,但内摩擦角受充填节理的影响较明显。
Considering the effect of different height-diameter ratio and filling joint characteristics on rock strength and deformation characteristics, a model test of similar materials was conducted in the laboratory. The uniaxial compression and shear tests of the intact specimen, the “10” joint specimen and the “Wells” joint specimen were carried out respectively. The conclusions are as follows: (1) In the compression and shear tests, The X-shaped conjugate bevel and the monoclinic shear failure, the total trend of the damage traces are similar; (2) The complete specimen is significantly affected by the size effect, the joint specimen is significantly affected by the structural weakness and affected by the filling , And the relationship between the joint density and the strength is not prominent. (3) The elastic modulus E and the cohesion c have no obvious change in the two kinds of joint specimens, but the internal friction angle is obviously affected by the filling joint.