| 摘要 |
FIELD: mining. ^ SUBSTANCE: invention refers to mining and can be implemented for entries fastening. The method consists in installation of wire coil on an anchor rod, in introducing the anchor into a bored blast hole and in impressing a turn of the wire coil into walls of the blast hole. The wire coil is assembled on the rod in a screwed groove cut in the rod. The diametre of the wire coil is bigger, than the diametre of the blast hole. The end of the wire coil introduced into the blast hole is secured on the anchor rod and is rotated in the direction wherein diametres of turns of the wire coil become less; after that, turns of the wire coil are pressed into the walls of the blast hole by elastic force of the wire coil. The device consists of the anchor rod, on the exterior surface of which the groove is cut. The wire coil is laid into the groove; the diametre of the wire coil exceeds the diametre of the blast hole. The end of the wire coil introduced into the blast hole is secured on the anchor rod. A head turned around with a wrench is assembled on the end of the anchor rod outgoing from the blast hole. ^ EFFECT: increased efficiency of the method due to reduced labour intensiveness at anchor installation and at operation, and also due to increased reliability of its cohesion with walls of the blast hole. ^ 6 cl, 1 dwg |
