(S100); Injecting mortar using a cement mortar filling hose (S101); (S102) fastening to each other integrally with the male screw of the lock bolt and the female screw of the stopper device; Manually inserting the lock bolt with the stopper into the rock drilling hole (S103); Mounting ...
bolt; rotating the polygonal bolt of the stopper backward and removing the stopper device before the mortar is hardened; anchoring a pressure plate to the rock bolt and completing the construction of a rock bolt; and recycling the removed stopper device for preventing the outflow of cement ...