ROCKBOLT AND HYDRAULIC PRESSURE APPARATUS USING THE SAME

摘要

PURPOSE: A rock bolt and a pressure fluid supplier therefor are provided to easily separate a pressure fluid pipeline from a coupling after the rock bolt is fixed. CONSTITUTION: A rock bolt(100) comprises a hollow body(110), a tip cap(120), and a coupling(160). The hollow body has a hollow in which pressure fluid is injected and is expanded by pressure fluid supplied to the hollow. The tip cap is inserted into the front end of the hollow body and has a hollow for injecting the pressure fluid into the hollow of the hollow body. The coupling is detachably coupled to the tip cap. A pressure fluid pipeline(150) is coupled to the coupling.