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What are the technical characteristics of prestressed anchor rods?

Jun 27, 2025 Leave a message

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Handan Zhongfu Industrial And Mining Accessories Co., Ltd.

Handan ZhongFu company is a professional manufacturer for underground mining supporting products with over ten year experience. We can manufacture Split sets ,friction bolt, Combi split sets, Expandable friction bolt,Swellex, Threaded bar bolt, Cable bolt, Combi cable bolt, Welded mesh, Domed plate, Nuts, other mining Equipment.

 

What are the technical characteristics of prestressed anchor rods?
 
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1. The prestressed grouting anchor rod realizes the core idea that "the surrounding rock is the main load-bearing body, fully utilizing the potential of the surrounding rock's own load-bearing capacity, and the support only plays a role in reinforcing the surrounding rock".

 

2. This technology truly achieves the concept of "double speed, quick effect, small prestress loss, and controllability", which realizes the protection and utilization of the bearing potential of the surrounding rock itself.

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info-309-309
 

3. This technology is a combination of prestressed anchor rods and ordinary mortar anchor rods. The anchor rod can be integrated with the surrounding rock to jointly bear the pressure of the formation; The pre stress applied by the anchor rod is sealed in the rock mass for a long time, causing the surrounding rock to be subjected to triaxial pressure, thereby improving the bearing capacity of the joint support body.

 

4. Use pressure grouting. It can ensure that the drilling slurry is full, and the anchor head and rod are tightly wrapped by the slurry, which can allow some of the slurry to penetrate into the cracks of the surrounding rock and increase the strength of the fractured rock.

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