| 摘要 |
A roof bolting with a polymeric ampoule includes a metal rod made of screw profile at the outer end of which a nut is installed, with support spherical washer, in the center of the washer a cylindrical opening is provided, tightening net, crown runner, polymeric two-chamber ampoule with polymer mixture. The nut is arranged with a spherical or conical segment. The tightening net is connected to connection links. The crown runner has rigidity ribs over the whole length. Pitch of the openings in the crown runner is a template for installation of anchors. |
