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Abstract The reinforcement with fully grouted bolts is widely adopted in slope engineering due to its proven efficacy and low cost. However，the bolting mechanisms for bedding rock slopes are not clear and further investigations should be performed. The bolting behaviour of fully grouted bolts in bedding rock slopes is investigated considering the geological structural characteristics of bedding rock slopes and the interactions between the bolt and the rock mass utilizing the elastic theory and structural mechanics. A new mechanical model for fully grouted bolts is then put forward. The lateral shear and axial stresses acting in the intersection of the bolt and the discontinuity are found to be activated simultaneously and that the resistance of the bolt in bedding slope is provided jointly by the axial force and the shearing resistance. A linear relationship between the anti-slide forces provided by the axial force and the lateral shear force is described. Numerical simulations with the finite element method software ABAQUS to the bolting of a bedding rock slope confirm the correctness of the proposed mechanical model.
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Received: 08 November 2013
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2014, Vol. 33 
