High Strength Steel Pipe For Mining MF40 MF43

Product Details of Tabung Baja Berkekuatan Tinggi Dengan Celah Memanjang Untuk Memperkuat Batuan Perimeter Di Pertambangan MF33 MF40 MF43

Hollow anchor rod is a diploma of metallic plate rolled into a longitudinal slit with a tubular rod, with a rock drill forcibly pressed than the diameter of the rod small borehole (with a difference of 2 ~ 3mm), may be straight away alongside the hollow to the 80 ~ 100cm range of radial stress at the hollow wall and the friction produced thru the layer to save you the encompassing rock sliding down, coupled with the anchor tray tray bearing force. therefore the encompassing rock is in a three-way force kingdom, to understand the friction anchoring pressure because of the elastic tension of the pipe wall squeezing the hole wall, it is a new type of self-anchoring anchor that actively reinforces the surrounding rock of laminar development. It is a new type of self-anchoring anchor that actively reinforces the rock with developed laminations like an expansion nail firmly nailed to the surrounding stable rock layer. The compression force per meter of the anchor into the borehole is about 25kN, and the anchoring force generated is roughly equal to the compression force. For anchor rods of the same OD and material, the thicker the pipe wall, the higher the elastic stress of the metal pipe, the smaller the hole compression, and the greater the anchoring force. In the hard rock layer its anchoring force is greater, such as sandstone anchoring force can reach 60 ~ 100kN. in the blasting vibration rock anchor shift and other circumstances or with the passage of time, the later anchoring force has a significant trend of increasing. After 100 days of installation in coal strata, the anchoring force can be increased from 60kN to 90kN. lateral anchoring of the strata, there is a good adaptability; borehole bending, anchoring more firmly.

Specifications and parameters of Tabung Baja Berkekuatan Tinggi Dengan Celah Memanjang Untuk Memperkuat Batuan Perimeter Di Pertambangan MF33 MF40 MF43

Main Specifications: MF43 MF40 MF33

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

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

Working Principle of Tabung Baja Berkekuatan Tinggi Dengan Celah Memanjang Untuk Memperkuat Batuan Perimeter Di Pertambangan MF33 MF40 MF43

Hollow anchor rod is a full-length anchoring, active reinforcement of the surrounding rock of the new anchor, it is a three-dimensional part of the longitudinal slit of the 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 anchor tray pallet bearing force, so that the surrounding rock is in a three-way state of force, and to achieve the rock great in the bursting vibration of surrounding rock Anchor shift and other circumstances, the late 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.

Technical features of Tabung Baja Berkekuatan Tinggi Dengan Celah Memanjang Untuk Memperkuat Batuan Perimeter Di Pertambangan MF33 MF40 MF43

1. the raw material adopts high-strength alloy strip steel;.

2. Simplest installation.

3. No anchoring agent required.

4. High friction between anchor and rock body;.

5. High shear and tensile strength; 6. Equipped with high-strength pallet, the pallet is subjected to uniform force.

6. The height of the roadway is greater than the length of the anchor rods.

Product Description of Tabung Baja Berkekuatan Tinggi Dengan Celah Memanjang Untuk Memperkuat Batuan Perimeter Di Pertambangan MF33 MF40 MF43

Hole anchor rod, additionally known as rock stabilizer, is a sophisticated cloth important for underground help. pipe slit anchor is a relatively specialised assist object, which is an advanced fabric used for underground culvert roof and different engineering guide.

Primary technical overall performance: preliminary anchoring pressure: 3~7 tons; pipe ring pull-off load: eight~10 lots; anchor pipe pull-off resistance: 12~13 lots; corrosion resistance is 20~30% better than that of a3 metallic, that's conducive to lengthy-term use.

 Usage

1. Determine the anchor hole position according to the design requirements, and drill the hole with drilling rig.

2. Blow out the rock powder in the hole with pressurized air.

3. The rod body mounted on the anchor disk, with an impact drill anchor into the hole pipe slit anchor drilling hole diameter recommended calculation method: rock layer: drilling diameter = (0.9-0.95) x anchor diameter anchor drilling depth: anchor length +100mm drilling deflection rate <1% coal layer: drilling diameter = (0.9-1.00) x anchor diameter anchor drilling depth: anchor length +200mm drilling deflection rate <1.5%. Drill deflection <1.5%.