Figure 10
From: Mechanical behavior analysis of fully grouted bolt under axial load

Several special cases. (a) When the bolt–grout interface is combinatorial coupling, and the grout–rocksoil interface is mechanical interlock; (b) When the bolt–grout interface is mechanical interlock, and the grout–rocksoil interface is combinatorial coupling; (c) When the bolt–grout interface is combinatorial coupling, and the grout–rocksoil interface is friction; (d) When the bolt–grout interface is friction, and the grout–rocksoil interface is combinatorial coupling.