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Large-diameter high-pressure-resistant hollow fiber reinforced plastic anchor rod and production process thereof

A fiber-reinforced plastic and production process technology, applied in the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problems of small inner holes, poor blasting pressure resistance, etc., to improve pressure resistance, improve bonding strength, The effect of saving installation time

Active Publication Date: 2015-04-15
江苏飞博尔新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to provide a large-diameter, high-pressure-resistant fiber-reinforced plastic anchor and its production process, which can realize high-pressure, large-capacity, and rapid Grouting, which is conducive to the rapid installation of large tunnel projects

Method used

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  • Large-diameter high-pressure-resistant hollow fiber reinforced plastic anchor rod and production process thereof
  • Large-diameter high-pressure-resistant hollow fiber reinforced plastic anchor rod and production process thereof
  • Large-diameter high-pressure-resistant hollow fiber reinforced plastic anchor rod and production process thereof

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Effect test

Embodiment 1

[0032] Embodiment 1, producing a large-diameter high-pressure-resistant hollow fiber-reinforced plastic anchor rod with an outer diameter of 60 mm and an inner hole diameter of 40 mm.

[0033] a. Mix and stir unsaturated polyester resin, dibenzoyl peroxide, aluminum hydroxide and decabromodiphenyl ether to form a resin solution, and let it stand for 15 minutes. The mass ratio of each component in the resin glue solution is: unsaturated Polyester resin 75%, dibenzoyl peroxide 1%, aluminum hydroxide 15%, decabromodiphenyl ether 9%.

[0034] b. If image 3 and 4 As shown, a mandrel mold 6 with a diameter of 40mm is used, and a preforming mold 7 is arranged at one end of the mandrel mold 6, and a plurality of small holes 8 are uniformly distributed along the circumferential direction on the preforming mold 7. Firstly, the first part of the glass fiber yarn is put into the resin tank through the creel to soak the resin, and then it is drawn to the surface of the mandrel mold 6 th...

Embodiment 2

[0037] Embodiment 2, producing a large-diameter high-pressure-resistant hollow fiber-reinforced plastic anchor rod with an outer diameter of 70 mm and an inner hole diameter of 40 mm.

[0038] a. Mix and stir vinyl resin, tert-butyl peroxybenzoate, calcium carbonate and antimony trioxide to form a resin solution, and let it stand for 30 minutes. The mass ratio of each component in the resin glue solution is: vinyl resin 70% , tert-butyl peroxybenzoate 3%, calcium carbonate 20%, antimony trioxide 7%.

[0039] b. If image 3 and 4As shown, a mandrel mold 6 with a diameter of 40 mm is used, and a preforming mold 7 is arranged at one end of the mandrel mold, and a number of small holes 8 are uniformly distributed along the circumferential direction on the preforming mold 7 . Firstly, the first part of the basalt fiber yarn is put into the resin tank through the creel to soak the resin, and then it is drawn to the surface of the mandrel mold 6 through the small hole 8 on the pref...

Embodiment 3

[0042] Embodiment 3, producing a large-diameter high-pressure-resistant hollow fiber-reinforced plastic anchor rod with an outer diameter of 70 mm and an inner hole diameter of 40 mm.

[0043] a. Mix and stir epoxy resin, tert-butyl peroxybenzoate, aluminum hydroxide and antimony trioxide to form a resin solution, and let it stand for 25 minutes. The mass ratio of each component in the resin glue solution is: epoxy resin 73 %, tert-butyl peroxybenzoate 2%, aluminum hydroxide 17%, antimony trioxide 8%.

[0044] B. If image 3 and 4 As shown, a mandrel mold 6 with a diameter of 40 mm is used, and a preforming mold 7 is arranged at one end of the mandrel mold, and a number of small holes 8 are uniformly distributed along the circumferential direction on the preforming mold 7 . Firstly, the first part of the basalt fiber yarn is put into the resin tank through the creel to soak the resin, and then it is drawn to the surface of the mandrel mold 6 through the small hole 8 on the p...

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Abstract

The invention discloses a large-diameter high-pressure-resistant hollow fiber reinforced plastic anchor rod and a production process thereof. The anchor rod comprises a hollow anchor rod body. The anchor rod body is formed by overlapping a plurality of layers of axial fiber yarn and annular fiber yarn which are immersed through a resin solution from the inside to the outside alternatively, and the inner diameter of the anchor rod body is larger than or equal to 30mm. Thread grooves or spiral protrusions are formed in or on the surface of the anchor rod body. The anchor rod has the advantage that an axial fiber layer of the anchor rod body ensures high tensile strength and bending strength of the rod body and ensures enough anchoring force in construction accordingly. The annular winding fiber layer of the anchor rod body ensures transverse performance of the rod body, improves pressure resistance of the rod body and enables the explosion pressure of the anchor rod to be larger than or equal to 8MPa. The inner diameter of the anchor rod body is larger than or equal to 30mm, fast high-pressure large-volume grouting can be conducted, and fast construction can be achieved. By means of the thread grooves or the spiral protrusions, bonding strength between the anchor rod and an anchoring agent is improved.

Description

technical field [0001] The invention relates to spray anchor support, in particular to a large-diameter high-pressure-resistant hollow fiber-reinforced plastic anchor rod suitable for rapid and stable grouting full-length anchorage of large tunnels and a production process thereof. Background technique [0002] The diameter of the inner hole of the traditional FRP hollow bolt is 5-25mm, and the blasting pressure is less than 1MPa. As a result, high-pressure rapid grouting cannot be performed during construction, and the installation speed is limited, which can no longer meet the rapid construction requirements of large-scale tunnel projects. [0003] Anchor bolts with a diameter of more than 30mm are large-diameter bolts, but qualified large-diameter bolts cannot be produced according to the current existing technology. With the increasing difficulty of various engineering constructions, it is urgent to solve this problem. a question. Contents of the invention [0004] Pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D21/00B29C70/34
Inventor 金双华沈锋
Owner 江苏飞博尔新材料科技有限公司
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