1. Scope

Keywords

Rationale

The test addresses the needed and advantages of rapidly obtaining data and the ability to test rocks that are too weak or fractured to sample by core or other methods. The test reduces bias in the results caused by testing only surviving sections of rock cores at the drill hole and possibly biased even more after transporting and sample preparation at the testing laboratory at some moisture content and stress level probably significantly different than in situ. It can be used to obtain shear strength data for coal and non-coal mine pillars, rock slope mass, socketed piers in rock, and underground openings for designs, quality assurance, and rapid measurements. Users of the data will be rock bolt engineers, rock foundation engineers, slope stability engineers, tunneling and underground mining engineers, and rock pier engineers.