An Experimental Investigation into the Stress-Strain Characteristic under Static and Quasi-Static Loading for Partially Embedded Rock Bolts

This article deals with a static and quasi-static load using the maximum power of hydraulic pump. Additionally, coefficients for partially embedded rock bolts were determined. The laboratory tests included 2.2 m long bolts, which segmentally on lengths 0.05 m, 0.3 0.9 tested. To fix ribbed bolt rods in steel cylinders, resin cartridges length 0.45 used. main aim research was to determine load-displacement characteristics. Knowing rod tensile mechanism, points failure material continuity identified, basis stress-strain characteristics are made. Particular attention paid definition of: stress yield point (?1), (?2), at (?3), strain elastic range (?1), (?2) corresponding (?3).