АНКЕРНАЯ КРЕПЬ

摘要

FIELD: mining. ^ SUBSTANCE: invention can be implemented in mining industry and at construction of tunnels. The anchor support consists of a metallic rod with a plate and of a wood rod. Flat rings with slits are strung on the wood rod along its length. When the metallic rod is rammed into a wood one, the latter is indented into rock, while the rings perform as concentrators of expansion pressure onto separate layers of rock along the length of a borehole. ^ EFFECT: increased bearing capacity of anchor support. ^ 4 dwg