孔隙玄武岩力学性质试验研究

以孔隙玄武岩为研究对象,采用RMT—150岩石力学试验系统,对不同孔隙率的玄武岩在干燥和饱和两种状态下进行了单轴和三轴压缩试验;并分析和探讨了孔隙率对岩石强度力学指标的影响。研究结果表明,玄武岩孔隙率与其抗压强度、弹性模量、内摩擦角符合指数关系,有较好的相关性,黏聚力和泊松比与孔隙率之间无直接关联。在干燥状态下的岩石内摩擦角值小于饱和状态;而其余力学指标正好相反,说明水对孔隙玄武岩强度影响较大。

Experimental research on mechanical properties of porous basalt

Using the RMT - 150 rock mechanics test system that porous basalt as the research object, performed uniaxial and triaxial compression test to different porosity of basalt in two kinds of dry and saturated, and analyzes and discusses the influence of porosity to rock strength mechanics index. Research results showed that the basalt porosity and compressive strength, elastic modulus, angle of internal friction was relative, and conformed to exponent. Cohesive force and the porosity was not direct connection between porosity. With the rock in the dry, the angle of internal friction of basalt was less than the saturated state, and the rest of the mechanics index on the contrary, that showed the water had a greater influence on the strength of porous basalt.