ANCHOR Russian patent published in 1996 - IPC

FIELD: mining. SUBSTANCE: pushing apart members of an anchor are made of elastic material in the form of radially pressed down hollow cylinders with slip on one side. The members may be of different length, made of material of different modulus, and placed in the well at bearing member with rest on each other or without the rest through a space. EFFECT: increased reliability of the anchor at the expense of adjustment of pliability and coupling with walls. 6 cl, 2 dwg