METHOD FOR ANCHOR INSTALLATION AND ANCHOR Russian patent published in 2008 - IPC E02D5/76 

FIELD: means for anchoring structural elements or bulkheads, particularly ground and rock anchor installation.

SUBSTANCE: anchor has pipe with longitudinal creases and end to be inserted inside orifice. Said end may be expanded after anchor insertion in the orifice under the action of inner pressure to provide frictional and/or mechanical pipe fixation in the orifice. After anchor insertion anchor pressure is increased for front conical part of anchor end separation. After that hardening mass is injected into orifice through the anchor to fill voids in anchor end located at orifice bottom and base (ground, rock) receiving the anchor and into adjoining cracks and caverns. The hardening mass is hydraulically-bound cement-based substance.

EFFECT: increased reliability and duration of anchor retention in ground.

23 cl, 11 dwg