Prefabricated tunnel prestressed anchor and manufacturing method and use method therefor

Abstract

A prefabricated tunnel prestressed anchor comprises an anchor rod, the anchor rod comprises a free section and a prestressed section which are arranged in sequence; the prestressed section of the anchor rod is sleeved with a steel casing, holes are formed in the steel casing, a filler material is arranged between the steel casing and the anchor rod and filled in a space between the steel casing and the anchor rod after a prestress is applied to the anchor rod on a tensioning bench, and when the filler material is electrified, the structure of the filler material is destroyed; sleeves are arranged at two ends of the steel casing, and grout plugs used for sealing the steel casing are arranged in openings of the sleeves. The prestressed anchor can be directly installed in site to be used, a prestress is applied after the structure of the filler material is destroyed.

Dependencies are inferred from the claim text.