ANCHOR SUPPORT FOR MINE WORKINGS Russian patent published in 2013 - IPC E21D21/00 

FIELD: mining.

SUBSTANCE: anchor support for mine workings includes a bar with grooves and elastic members, a support plank and a tension nut, which are arranged on the bar end projecting into the working-out. The bar is equipped with an internal channel. Elastic members are made in the form of closed elastic covers installed in the bar grooves hydraulically or pneumatically connected to the internal channel of the bar, which is sealed with a plug or a valve.

EFFECT: simplifying the design of anchor support for mine working-outs and increasing the strength of attachment.

3 cl, 2 dwg