Suppliers Of Prestressed Steel Wires
Product Advantage:
Adopting reverse grouting to fill the borehole with slurry, the process is simple, and the strand reaches the requirement of high-pressure grouting, which is able to realize the combination of anchoring and grouting, thus avoiding the need of repeated construction.
Combining ordinary anchor cable and grouting into one, the strength of the new rock body can be increased by about 40% by anchoring and cementing the surrounding rock, thus realizing the active support with self-control of the surrounding rock.
The steel strand is processed with pre-stressed spiral ribs. Tests have proved that the use of pre-stressed spiral-ribbed steel wires to manufacture anchor cables can increase the anchoring force significantly and provide higher anchoring effect than those manufactured with the same diameter of smooth steel strands. These advantages make the product have higher performance and effect in the field of perimeter rock support, which helps to improve the quality and safety of the project.
Product Description:
Anchor ropes are mainly used in coal mines and other mines, shafts and alleys, as well as in the engineering of surrounding rock reinforcement. In the support design of mine tunnel, the traditional anchor support forms and parameters are often difficult to support effectively, which can easily lead to the collapse of the overall anchor support and bring serious consequences. In contrast, the mining anchor cable can fix the anchor ring on the hard top plate due to the unrestricted length of the steel strand. At the same time, due to the high strength of the steel strand, it can provide a large prestressing force, which makes the composite roof plate in the lower part of the anchor cable section and the anchored part form a whole structure, creating a unified rigid roof plate, thus exerting a good support effect. The design and application of this kind of anchor cable can improve the stability of the surrounding rock in coal mine and mining projects, ensuring the safety and durability of the project.
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:
The structure of mining anchor cable usually consists of three parts: amplitude anchor head, anchor cable body and outer anchor head. The inner anchor head, also known as the anchoring segment or anchor root, is the part of the anchor cable that is fixed in the rock body to provide prestressing. According to the structural form, the inner anchor head is divided into two categories: mechanical and cemented, while the cemented can be divided into two types: mortar cemented and resin cemented, of which the mortar type is divided into secondary grouting and primary grouting. External anchor head, also known as the external anchorage section, is the anchor cable to provide tension and fixed part of the species include anchor plug type, threaded type, reinforced concrete cylinder anchor pier type, pier head anchor type and steel frame type and so on. Mining anchor cable consists of steel strand, anchoring agent, tray, anchorage and other accessories, which are mechanically tensioned to exert active pressure on the surrounding rock, and is a device to provide support. These components work together to ensure the effective application and stable support of anchor cables in mining and perimeter rock projects.
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.
The method of use is as follows:
1. According to the diameter and length of the anchor cable, drill holes at appropriate locations and remove debris in the holes.
Inject appropriate amount of resin anchoring agent into the hole, the type and amount of resin anchoring agent should be determined according to the design requirements.
2. Use the anchor cable to push the resin anchoring agent to the bottom of the hole to ensure full filling.
Connect the end of the anchor cable with the anchor drilling rig connector and start the drilling rig to mix the resin anchoring agent according to the specified mixing time.
3. Wait for the resin to cure and then install accessories such as pallets and anchors.
Use the tensioner to stretch the anchor cable to the specified preload to complete the installation and fixing of the anchor cable.
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