ROCK BOLT AND HYDRAULIC PRESSURE APPARATUS USING SAME

摘要

The present invention relates to a rock bolt mounted on a bed rock or the like for timbering, in the field of civil engineering. In particular, the present invention can provide a rock bolt (100), comprising: a hollow body (100) formed to have a hollow portion (112) for injecting and draining pressurized fluid (S) via a front end thereof so as to expand by the pressurized fluid (S) supplied to to the hollow portion (112) in a state in which a part is pressed into an indented shape along the peripheral direction thereof; a front end cap (120) formed to have a hollow portion (122) so as to inject the pressurized fluid (S) into the hollow portion (112) of the hollow body (110) and to drain the same from the hollow portion (112) of the hollow body (110), fitted on the outside of the front end of the hollow body (110) in the pressed state, and joined to the hollow body (110) so as to be fixed thereto; and a coupling (160) coupled to the front end cap (120) along the hollow portion (112) direction of the hollow body (110), and having a pressurized fluid pipe (150) coupled thereto so as to supply the pressurized fluid (S) and a connection path (162) for connecting the pressurized fluid pipe(150) and the hollow portion (112) of the hollow body (110).