Roadway Support Full Length Anchor MF43 MF40 MF33

Description of Sewn Tube Anchor

Compared with the traditional shelf support, because the support material used in anchor support is less, lighter weight, roadway excavation, reducing the amount of support material transportation, labor intensity is also greatly reduced, and is conducive to improving the efficiency of excavation. When the working face is being mined back, it also eliminates the retraction work of the steel scaffolding support, which not only reduces the labor intensity of the workers, but also improves the safety factor.

The drilling depth of the pipe slit anchor should not be less than the effective length of the anchor body, but the depth of the over-length value should not be more than 100mm. drilling holes should be kept in a straight line, and the drilling direction of the system anchor should be perpendicular to the excavation surface, and when the rock layer level or the main structural surface is obvious, it should be as large as possible to make a larger angle with it, but the perpendicular deviation from the excavation surface should not be more than 20 °; the local anchor should be as large as possible with the rock layer level or the main structural surface to make a large angle of intersection. intersect. Moreover, the arrangement of pipe-seam anchors is relatively centralized, and the construction of external waterproofing under the basement floor is more convenient; for the case of insufficient bearing capacity of individual self-propelled anchors, there is a strong resistance due to the sharing of a larger number of self-propelled anchors. Anchor support in support principle in line with modern rock mechanics and rock control theory, belongs to the “active” support. After the installation of anchor, it reinforces the surrounding rock inside the surrounding rock, and quickly forms an overall bearing structure of the surrounding rock a support, so it can mobilize and use the stability of the surrounding rock itself, give full play to the bearing capacity of the surrounding rock itself, and effectively control the deformation of the surrounding rock of the roadway, so the anchor support is more conducive to the protection of the stability of the surrounding rock of the roadway, and improve the maintenance of roadway conditions. Compared with the traditional racking type support, because the support material used for anchor support is less and lighter, when the tunnel is being dug, it reduces the amount of support material transported, and the labor intensity is greatly reduced, which is conducive to improving the efficiency of the digging process. When the working face is being mined back, it also eliminates the retraction work of the steel scaffolding support, which not only reduces the labor intensity of the workers, but also improves the safety factor.

Main Specifications:

 MF43  MF40  MF33

Length (mm): 1200, 1500, 1800, 2000, 2500

Material: Q235, 16Mn（Q345  Q355）, 20 Mnsi.

Technical requirements of sewing pipe anchor rods

The pipe slit anchor will be installed in the borehole which is a little smaller than the diameter of the pipe, at this time, three kinds of forces will be applied to the surrounding rock, one is the radial pressure on the borehole wall in the whole length of the pipe slit anchor, one is the friction force to stop the surrounding rock from sliding down, and one is the bearing force of the pallet plate of the pipe slit anchor, which makes the surrounding rock more stable. The surface of slit pipe anchor should be flat, without serious strain, 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.Retaining ring weld pull-off force ≥ 80kN, the ultimate tensile strength of the rod body ≥ 110kN. initial anchor force ≥ 25kN / m, pallet bearing capacity ≥ 65kN.

Main products

Shandong Ruiyu Mining Material Processing Co., Ltd. is mainly engaged in the following products: threaded steel anchor rods, sewing pipe anchor rods, twist anchor rods, support mesh, anchor rods (left-handed anchor rods, right-handed anchor rods), welded mesh, anchor rods trays, mining trays, resin anchors, W steel belts, M steel belts, stranded steel wires and all kinds of nuts and other products.

Product Qualification