岩石表面硬度研究进展与应用综述

Rock surface hardness test belongs to a kind of non destructive test, the test specimen does not need strict requirements. The test is more convenient, quickly, and can be multi-faceted at the scene. Rock surface hardness has been widely used abroad in the quick test for rock uniaxial compression strength. According to the principle of the harder rock leading to the higher rock strength, the measured indicators for characterization of rock strength and classification can be obtained due to different rock has different hardness. This paper summarizes the results of comparison research including: rock point load strength and uniaxial compressive strength, the relationship between the surface hardness and uniaxial compressive strength, size effect of the rock surface hardness and the rock strength, and the application of rock surface hardness in rock mass quality classification. The current research status and development trend of rock surface hardness are analyzed to provide certain reference for the field study.