Common in the case of bolt construction site, divided into multiple anchor. However, we know how much you tube sewn anchor?
Pipe seam-bolt is a full length novel active strengthening the surrounding rock bolt, it is three-dimensional part of a the longitudinal slit high strength steel pipe, when installed in slightly smaller than the diameter of the borehole, immediately the radial pressure is applied within the entire length of the bore wall and prevent friction Surrounding decline, coupled with the supporting force of the bolt tray pallet, so that the surrounding rock in the three-force state. As in the case of blasting vibration surrounding rock anchor shift late anchoring force has significantly increased when the surrounding rock occurrence of significant displacement, the anchor does not lose its support resistance, it has better features than up the shell and bolt.
Tube slotted bolt main performance and specifications:
1, the main technical performance
(1) The initial of anchoring force: 3 to 7 tons;
(2) pipe ring pull-off load: 8 to 10 tons;
(3) anchor tube tensile breaking capacity: 12 to 13 tons;
(4) corrosion resistance than the A3 steel high 20 to 30%, is conducive to long-term use.