METHOD FOR TESTING THE BONDING STRENGTH OF ROCK BOLT-GROUT-SURROUNDING ROCK
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Jul 24, 2017
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Jul 26, 2016
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The present method for testing the bonding strength of rock bolt-grout-surrounding rock comprises the following steps: step 1, fabricating the simulative body of a rock bolt provided with a first surface, wherein the concave-convex characteristic of the first surface is consistent with the surface appearance of a rock bolt, and the first surface is a plane; step 2, pouring a grout layer for simulating the grout material on the first surface of the simulative body of the rock bolt; step 3, pouring a surrounding rock layer for simulating the surrounding rock material on the solidified grout layer, wherein the simulative body of the rock bolt, the grout layer and the surrounding rock layer form a simulative anchoring body; and step 4, performing a shear test along the simulative stress direction of the simulative anchoring body to obtain mechanical parameters reflecting the bonding strength of the anchoring body.
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