Abstract:Based on the analysis of end-anchored retrievable resin bolt and common resin metal bolt structures,a mechanical model of bonding segment is established. By means of the popular finite element software,a nonlinear analysis of these two kind of bolt model is conducted;and the distribution rules of shear and normal stresses in the bonding segment are found. Then,electrometric method is adopted to measure the axial strain on the wall of hole,and the variable character of the strain is found preliminarily,which basically reveals the mechanical character of the bolt¢s bonding segment through those two methods. Such conclusions can be drawn:the shear stress on the contact surface of the bolt¢s anchored part gets the maximum value at the bottom of the hole,and decreases in the axial direction;the normal stress is compressive one,and its varying tendency is same with that of the shear stress;and the distribution rule of the strain is similar to that of the stress.