Prestressed Strand
Advantage:
Our mining anchor cables are manufactured with high strength Prestress Wire and PC Wire to ensure excellent tensile strength and stability for use in harsh environments such as deep shaft support and roadway reinforcement, while the Wire PC Strand structure is designed to enhance anchorage strength, effectively resisting ground pressure and enhancing mine safety. The product is characterized by corrosion resistance and low relaxation, and with the advanced tensioning process, it is easy to construct and has a long service life. Choose our mining anchor ropes to guarantee an efficient and reliable mine support solution!
Product Description：
Our Mining Anchor Cables are manufactured with high strength Prestressed Strand and Wire PC Strand, which are designed for mine support and rock reinforcement with excellent tensile strength, durability and stability. They are made of high quality high carbon steel, combined with advanced pre-stressing process, to ensure that the anchor cable provides strong anchoring force in deep shafts, tunnels and tunnel support, effectively resisting ground pressure and preventing rock from loosening or collapsing.
Mining Anchor Cable Steel Strand is characterized by low relaxation and corrosion resistance, and can adapt to the harsh environment of humidity and high stress in underground. Its multi-layer strand structure further enhances the toughness and load-bearing capacity, and with professional tensioning and locking technology, the construction is efficient and convenient, ensuring long-term support reliability. Widely used in coal mines, metal mines and underground projects, it is the ideal choice to protect mine safety!
Specifications and parameters:
Specification | |||||||||
model number | Nominal Diameter | tensile strength | cross-sectional area | Weight per meter | Maximum force on the entire strand | 0.2%yield force | Maximum force Total elongation | Stress relaxation properties | |
Initial load phase When dry real meta product Percentage of Power Number | 1000 hours Stress relaxation rate | ||||||||
D,/mm | Rm/MPa | S,/mm2 | g/m | Fm/kN | Fp₀₂/kN | A/% | %F ma | r/% | |
1*7 | 9.50 |
1860 | 54.8 | 430 | 102 | 89.8 |
3.5 |
70
80 |
2.5
4.5 |
12.70 | 98.7 | 775 | 184 | 162 | |||||
15.20 | 140 | 1101 | 260 | 229 | |||||
15.70 | 150 | 1178 | 279 | 246 | |||||
17.80 | 191 | 1500 | 355 | 311 | |||||
18.90 | 220 | 1727 | 409 | 360 | |||||
21.60 | 285 | 2237 | 530 | 466 | |||||
1*7 | 9.50 |
1960 | 54.8 | 430 | 107 | 94.2 | |||
12.70 | 98.7 | 775 | 193 | 170 | |||||
15.20 | 140 | 1101 | 274 | 241 | |||||
1*71 | 12.7 | 1860 | 98.7 | 775 | 184 | 162 | |||
15.20 | 140 | 1101 | 260 | 229 | |||||
1*19S (1+9+9) |
21.80 |
1860 |
313 |
2482 |
583 |
513 | |||
1*19W (1+6+6/6) |
28.60 |
1860 |
532 |
4229 |
990 |
854 | |||
Product Details:
High strength prestressing PC steel wire for concrete reinforcement is supplied in accordance with ASTM, BS, DIN standards or customer's requirements. The tensile strength ranges from 1470Mpa-1860Mpa.
According to the tensile strength, PC wires can be classified as follows: 1470MPa, 1570MPa, 1670MPa, 1770MPa and 1860MPa.
Mining Anchor cable structure generally consists of three parts: the amplitude anchor head, the body of the anchor cable and the outer anchor head. The inner anchor head, also called anchor section or anchor root, is the root of the anchor cable anchored in the rock body to provide prestressing, according to its structural form is divided into two categories: mechanical and cemented, and cemented is divided into two categories: mortar cemented and resin cemented, and the mortar is divided into the secondary grouting and primary grouting. External anchor head, also known as external anchorage section, is the anchor cable to provide tension tonnage and locking parts, its types of anchor plug type, threaded, reinforced concrete cylinder anchor pier type, pier head anchor type and steel frame type. Mining anchor cable is composed of steel strand, anchoring agent, tray, anchorage and other anchoring accessories, which can be mechanically tensioned to exert active pressure on the surrounding rock. Cold-drawn steel wires for prestressed concrete strands: Used for the reinforcement of prestressed concrete structures, such as large-span bridges on railroads and highways, bridge crane girders, geotechnical anchoring works, multi-story industrial buildings, sports stadiums, coal mines and so on.
PC wire, galvanized, ASTM A416-10, 270k, low relaxation, for bridge suspension and stay cables.
Mining anchor cable steel wire parameters:
1.anchorage static load anchorage performance ηa ≥ 0.95 εapu ≥ 2.0%
2.Fatigue load performance: meet 2 million times cycle load
3.Cyclic loading performance: to meet 50 times cyclic loading
4.Anchor pull-out force: Tw＞1.05Nt=157.5KN
Structural features:
The anchor is drilled through the weak rock layer or sliding surface, anchored at one end in the hard rock layer, and then anchored at the other end in the hard rock layer, and then anchored at the other end in the hard rock layer.
The other free end is then tensioned to exert pressure on the rock layer to anchor the unstable rock. Anchor: According to the anchoring method, the anchor should be anchored in the hard rock layer.
How to use:
Drill a suitable hole according to the diameter and length of the anchor cable, remove the debris in the hole, put in the resin anchoring agent (the type and quantity of the resin anchoring agent is determined according to the design), push the resin anchoring agent to the bottom of the hole with the anchor cable, connect the end of the anchor cable with the connector of the anchor drilling rig, start the anchor drilling rig and stir the resin anchoring agent in accordance with the stipulated stirring time, and so on, when it is solidified, put on the pallets and anchorage, and pull it to the stipulated preload with the tensioner. After solidification, put on the pallet and anchorage, and use tensioner to pull it to the specified preload force.
