Equal Strength Threaded Anchor Rod

一、 Product usage and characteristics

Equal strength rebar type resin anchor metal rod body products are widely used in underground rocky tunnel, semi-coal rocky tunnel and coal tunnel anchor support, especially suitable for underground complex conditions under the tunnel and bunker support. The product is used with resin anchors, its characteristics 1, fast growth of strength, high strength, after installation can not only withstand the load in a timely manner, but also a large anchoring force. 2, easy to install and operate, low labor intensity of workers, high support efficiency. 3, tons of coal support costs are greatly reduced. 4. This product is based on the MT146.2-2011 standards. 

Product Characteristics and Structure Equal Strength Rebar Type Resin Anchor The main material of the metal body is preferred to be rebar with yield strength greater than 335MPa, which integrates the mixing of resin anchoring agent and installation of the anchor rod, and is conducive to improving the installation speed and preloading force of the anchor rod. The specifications and models can be designed and selected according to different applications, geological conditions and strength requirements.

Technical Parameters.

二、 Principle of operation and installation

1、Working Principle.

Equal-strength threaded steel type resin anchor metal rod consists of rods made of different strength materials and their accessories together with matching resin anchoring agent. According to the design of anchoring length, the rod body will be inserted into the hole where the anchoring agent is put, after stirring, the anchoring agent will produce chemical reaction, and within a certain time, the rod body will be bonded with the coal and rock to be fixed in the rock wall as a whole, and the threaded end will be added with the protective net and the bearing tray, and then tightened with the nut to achieve the role of the support, which will form the high-strength pre-stressing support, and be able to control the stability of roof slab, adapt to the movement of the peripheral rock, and effectively reduce to eliminate the off-lying, and solve the problem of roof collapse, which will reduce to eliminate the problem of roof collapse. It can control the stability of the roof slab, adapt to the movement of the peripheral rock, effectively reduce or eliminate the separation, solve the problem of roof collapse, and consists of a variety of support forms and structures to form a prestressed support system, which realizes the mechanical installation and greatly improves the safety and reliability of the support.

2、Installation and use

(1), according to the design of the metal rod body and anchoring agent selection

(2) Drill holes in the anchoring substrate, and the diameter and depth of the holes should be matched with the specifications of the anchors.

(3) After drilling, use pressurized air or water to remove the floating dust in the hole and load the anchoring agent.

agent.

(4), the use of mixing equipment to drive the metal rod body, while stirring while advancing to the bottom of the hole, the mixing time should be less than the anchor solidifying agent gel time.

(5), in the waiting time do not make the rod body movement

(6), after the specified waiting time, can be on the tray spinning nut, bearing time reached, can test the tensile strength.

Product description

The raw material of equal-strength rebar anchor is made of steel with elongation of not less than 15%, yield strength of not less than 335MPa, breaking strength of not less than 490MPa, made of 20MnSi by hot lashing, and the compression resistance is 20 tons to 50 tons respectively, and the straightness tolerance of φ18 to φ22 rods is less than 2mm/m, and the straightness tolerance of φ16 rods is less than 4mm/m. The carrying capacity of the tail screw of rods should be less than 75% of the breaking force of the parent material of rods. It should be not less than 75% of the breaking force of the parent material of the rod. Anchor screw nut and right-handed equal strength resin anchor supporting the use of the bottom end of the cylindrical column and six diamond/square/runway-shaped column of the integration of the nut body, the center of the nut is equipped with threaded holes, the diameter of the threaded body is from the bottom of the gradual increase in the shape of the body, easy to install, the force is reasonable, high strength, corrosion-resistant, aesthetically pleasing appearance, the use of molding technology, production, production, production, and long service life of the product.

Right-hand anchor/equal strength threaded steel anchor applicable conditions.

1、According to the design requirements to determine the position of the anchor hole, use the eye drill, anchor drilling rig or coal electric drill to drill the hole, the depth is 80-100mm shorter than the length of the anchor rod. 2、Use the compressed air pipe to reach into the bottom of the eye, through the compressed air, blow the rock dust inside the hole.

3、Diameter of drilling hole should be 6-12mm larger than the diameter of anchor rod.

4、Feed the medicine roll into the bottom of the eye with the anchor, start the mixing device for mixing, and strictly control the mixing time according to the requirement of resin anchor fixing agent.

5、After reaching the curing time, put on the tray and tighten the nut.