ROCK BOLT FOR GROUND REINFORCEMENT THAT USE PRESSURE AND THE CONSTRUCTION METHOD

摘要

PURPOSE: A rock bolt for reinforcing the ground using middle/low pressure, and a construction method thereof are provided to completely pour mortar in a hole of bed rocks, and to prevent the mortar from flowing down. CONSTITUTION: A rock bolt for reinforcing the ground using middle/low pressure comprises a pressure block(40), an injection pipe(60), a fastening nut(70), and a middle/low pressure chamber(80). The pressure block is coupled to a bolt shank(10), and adhered to the outer surface of a hole of bed rocks. The injection pipe is connected to the pressure block, and inserted into the hole of the bed rocks. The fastening nut is coupled to the bolt shank, and pressurizes the pressure block. The middle/low pressure chamber is coupled to the pressure block, and connected to the injection pipe. And the middle/low pressure chamber fills mortar in the hole of the bed rocks by pressurizing the mortar.