Abstract

The chemical corrosion has a significant degradation effect on the mechanical properties of non-persistently jointed rocks. In order to improve their physical and mechanical properties, the modification test was carried out by using silicone immersion and resin filling in the pre-existing joint with different geometries after chemical corrosion. This modification influence on the mechanical properties is verified by triaxial compression tests. Experimental results indicate that peak strength, elastic modulus and deformation modulus of jointed rock improved significantly after modification. Finally, the mechanism of strength improvement induced by the modification was revealed by SEM and EDS analysis.

摘要

化学腐蚀对非持久节理岩石的力学性能有显着的退化作用。为提高其物理力学性能，对化学腐蚀后不同几何形状的预制接头采用硅浸渍、树脂填充等方法进行改性试验。通过三轴压缩试验验证了这种修改对机械性能的影响。试验结果表明，改造后节理岩体的峰值强度、弹性模量和变形模量均有明显提高。最后，SEM 和 EDS 分析揭示了改性引起的强度提高的机理。