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Scattering and anchoring-grouting type anchor rod

A technology of bolts and grouting pipes, which is applied in the installation of bolts, mining equipment, earthwork drilling and mining, etc. It can solve the problems that the bolts cannot simultaneously realize the grouting reinforcement and anchoring functions in the loose area of ​​surrounding rock

Pending Publication Date: 2018-09-28
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a scattering grouting anchor that can solve the problem that the anchor in the prior art cannot simultaneously realize the functions of grouting reinforcement and anchoring in the relaxation area of ​​surrounding rock

Method used

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  • Scattering and anchoring-grouting type anchor rod
  • Scattering and anchoring-grouting type anchor rod
  • Scattering and anchoring-grouting type anchor rod

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing:

[0020] Such as figure 1 As shown in , it is a schematic diagram of the structure of the scattering grouting bolt.

[0021] The scattering solid grouting bolt of the present invention comprises a grouting pipe 1, and grouting holes 11 are evenly distributed on the side wall of the grouting pipe 1. Through threaded connection; the rear end of the grouting pipe 1 is threadedly connected with a sealing cover 12; the rear end of the grouting pipe 1 is provided with a grouting port 121, and the rear end of the grouting pipe 1 is evenly distributed with several grouting ports adjacent to the grouting port 121. Vent 122, such as figure 2 As shown, there are four or more exhaust holes 122 .

[0022] Wherein, the diameters of the sealing cover 12 and the connecting head 21 are the same and larger than the diameters of the grouting pipe 1 and the steel bar 2, so that the connectin...

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Abstract

The invention discloses a scattering and anchoring-grouting type anchor rod comprising a grouting pipe. Grouting holes are evenly distributed in the side wall of the grouting pipe. The front end of the grouting pipe is connected with a connecting head and closed. The front end of the connecting head is connected with a rebar through a thread. The rear end of the connecting head is connected with asealing cover through a thread in a sleeved mode. A grouting opening is formed in the rear end of the grouting pipe. A plurality of exhaust holes are evenly distributed in the positions, adjacent tothe grouting opening, of the rear end of the grouting pipe. According to the scattering and anchoring-grouting type anchor rod, the problem that in the prior art, an anchor rod cannot simultaneously achieve the grouting reinforcing and anchoring functions at a surrounding rock relaxation area can be solved, the structure is safe and reliable, stability is high, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of underground engineering and rock slope building materials, in particular to a scattering solidification and irrigation type bolt. Background technique [0002] After the underground cavern is excavated, the surrounding rock of the cave wall deforms into the cave, and the stress of the rock mass around the cave is redistributed. During this process, the surrounding rock of the cave wall may often undergo damage phenomena such as splitting, spalling, collapse, and rockburst. Due to the blasting and the release of ground stress around the hole, a certain depth of relaxation zone around the hole is often formed. In this regard, the surrounding rock surface shotcrete, anchor rods, and anchor cables are used to reinforce the project. [0003] Usually, the bolt is made of steel bar. After drilling a hole in the surrounding rock, the bolt is inserted and grouted into the hole, so that the bolt and the surroundi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00E21D20/02
CPCE21D20/021E21D20/028E21D21/0026E21D21/008
Inventor 张建海汪贤良周钟廖成刚何建华罗涛梁军王璐
Owner SICHUAN UNIV