What is friction bolt (split sets)?

Pipe slit anchor is a full-length anchoring, active reinforcement of the surrounding rock of the new type of anchor: its three-dimensional part is a longitudinal slit of high-strength steel pipe, when installed in a slightly smaller than the diameter of the pipe drilling, can be immediately in the full-length range of the radial pressure on the hole wall and prevent the surrounding rock sliding friction, coupled with the anchors tray pallet bearing force so that the surrounding rock is in a three-way state of force, and to achieve the rock layer great. In the case of blasting vibration surrounding rock anchor displacement, etc., the later anchoring force has increased significantly, when the surrounding rock is significantly displaced, the anchor does not lose its support resistance, it has better characteristics than the rising shell type anchor.