Mechanical Model and Experimental Verification of Horizontally Layered Rock Beams for a Tunnel Roof with Different Bonding Strengths between the Layers

Abstract

Abstract The interlayer plane denotes the relatively weak layer within the stratified rock mass, which significantly impacts the overall rigidity, strength, and stability of the tunnel roof. In this paper, based on the failure modes of tunnel roofs in a ... Practical Applications The results of the experiment show that during the deformation and failure of the roof of the tunnel cavity, the roof of the upper layer bonding strength is easy to bend along the midspan section, while the roof of the lower layer ...