Manufacturer Of MF40 Ring Hollow Structures

Tube Seam Anchor Overview

Working Principle of Pipe Seam Anchor

When a slotted anchor is installed in a hole smaller than the diameter of the pipe, three forces are exerted on the surrounding rock: radial pressure on the hole wall over the entire length of the slotted anchor, friction to stop the surrounding rock from sliding down the hole, and the support force of the slotted anchor pallet, which makes the surrounding rock more stable.

Specification of Slit Anchor

1、Outside diameter (mm):φ33,φ40,φ43 (0.5).

2、Length-(mm):-1200、1500、1800、2000、2500,

3, Material: Q235, 16Mn, 20 Mnsi.

Technical requirements of sewing pipe anchor rods

1、Seam pipe anchor surface should be flat, no serious strains, rust and corrosion. Weld seam should be free of cracks. No porosity slag, not allowed to burn through the pipe wall. The pallet should be able to move freely on the rod. Retaining ring interface and pipe seam opening mutual misalignment 1700-1900 is appropriate.

2, retaining ring weld pull-off force ≥ 80kN, rod limit tensile force ≥ 110kN.

Initial anchor force ≥ 25kN/m, tray bearing capacity ≥ 65kN.

Usage 

1. Determine the anchor hole position: Determine the position of the anchor according to the design requirements and use the drilling rig to make holes. Ensure that the drilling position is accurate and meets the design requirements.

2. Clean the rock dust in the hole: Use the pressure wind equipment to blow out the rock chips and rock dust in the hole to ensure that the hole is clean, which is conducive to the installation and fixation of the anchor rods.

3. Installation of anchor rods: Install the anchor disk on the anchor rods and use the impact drill to firmly drive the anchor rods into the holes. Determine the diameter and length of the anchor rods according to the recommended calculation methods for different rock types and hole diameters. The diameter and depth of the drill hole will be different in rock and coal seams, and will be determined by calculation according to the actual situation.

3. Pay attention to the skew rate of the drilling holes: when drilling holes, pay attention to the skew rate of the holes to ensure that it is within a reasonable range. According to different types of rock formations, control the deflection rate of the drill holes within the prescribed range to ensure safe construction.

We hope that the above guidance can help you to better carry out the installation work of anchor rods. If you have any other questions, please feel free to contact us.