Fully Threaded GFRP Rock Bolt

The face stabilization auxiliary method for tunneling is a practical choice by tunneling engineers to stabilize the excavation face in the case of extremely poor geological conditions. For higher strength requirements and cuttability consideration, the GFRP rock bolt or anchor is the general choice. There are two types of rock bolts, i.e. solid rod and hollow rod. The solid rod is inserted into the borehole after it is filled with mortar grout or resin cartridge, and the hollow rod is for post grouting after installation.