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Pressure dispersion type anchoring device and method

An anchoring device, a decentralized technology, is applied in the fields of earthwork drilling, bolt installation, hydropower generation, etc., which can solve the problems of composite anchoring structure failure, bearing plate damage, connection failure, etc., to improve the cooperative stress state, avoid The effect of shear failure and reliability improvement

Pending Publication Date: 2022-07-12
SHANDONG JIANZHU UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually the anchor cable is connected to the anchor rod through the pressure plate, and one end of the anchor cable passes through the pressure plate and cooperates with stoppers such as nuts and sleeves to apply the traction force of the anchor cable to the anchor rod through the stopper, but the stopper used Parts are easy to loosen and fall off under vibration or corrosion, resulting in connection failure; at the same time, the force coordination between the anchor cable steel strand and the stopper is poor, and it is easy to cause the steel strand to be damaged under long-term stress. Shear failure can also easily lead to the failure of the bearing plate, resulting in the failure of the composite anchor structure

Method used

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  • Pressure dispersion type anchoring device and method
  • Pressure dispersion type anchoring device and method
  • Pressure dispersion type anchoring device and method

Examples

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Embodiment 1

[0033] In an exemplary embodiment of the present invention, as Figure 1-Figure 4 As shown, a pressure-dispersed anchoring device is given.

[0034] like figure 1 The pressure-dispersed anchoring device shown is used for grouting reinforcement of the surrounding rock of the tunnel, especially the reinforcement of the surrounding rock of the tunnel by combining the bolt and the anchor cable to form a composite anchoring structure. 7 is provided with a bump as the stress support of the anchor cable, the anchor cable bypasses the bump and keeps fit with the bump, disperses the concentrated stress of the anchor cable, and improves the cooperative stress state between the anchor cable and the bearing plate 7. The resin is used as a grouting liquid for grouting to improve the reliability of the composite anchoring structure.

[0035] combine figure 1 , figure 2 , the pressure dispersion type anchoring device mainly includes a drill bit 1, a grouting pipe 3, a hollow anchor rod ...

Embodiment 2

[0057] In another exemplary embodiment of the present invention, as Figure 1-Figure 4 As shown, a pressure-dispersed anchoring method is given.

[0058] In combination with the pressure dispersion type anchoring device in Embodiment 1, in this embodiment, the pressure dispersion type anchoring method is introduced, including the following contents:

[0059] Assemble the anchor cable and the bearing plate 7 so that the anchor cable passes through the first hole and then fits around the second hole, and the two ends of the anchor cable form free ends;

[0060] The hollow bolt 4, the bearing plate 7 and the anchor cable are driven into the rock body through the drilling hole, and the free end of the anchor cable is located outside the drilling hole;

[0061] After the drilling is completed, adjust the anchor cable by pulling the free end of the anchor cable to keep the anchor cable fit with the bump;

[0062] The borehole is grouted through the hollow anchor rod 4, and after r...

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Abstract

The invention provides a pressure dispersing type anchoring device and method, and relates to the technical field of anchor rod supporting, the pressure dispersing type anchoring device comprises a stamping head and a pressure applying assembly, an anchor cable, a hollow anchor rod and a force bearing plate connected with the hollow anchor rod, a convex block is arranged on one side of the force bearing plate, and the force bearing plate is provided with a first hole and a second hole located in the side of the convex block; one end of the anchor cable penetrates through the first hole, bypasses the protruding block and then penetrates through the second hole, the anchor cable is attached to the protruding block, and the attaching area is in an arc shape. In order to solve the problem that an existing composite anchoring structure is prone to failure, a protruding block is arranged on a force bearing plate connected with a hollow anchor rod to serve as a stress support of an anchor cable, the anchor cable bypasses the protruding block and is attached to the protruding block, concentrated stress of the anchor cable is dispersed, the cooperative stress state of the anchor cable and the force bearing plate is improved, and the reliability of the composite anchoring structure is improved.

Description

technical field [0001] The invention relates to the technical field of bolt support, in particular to a pressure dispersion type anchoring device and method. Background technique [0002] The current tunnel projects are mainly divided into mountain tunnels and submarine tunnels. Whether it is a mountain tunnel or a submarine tunnel, initial support is required as a safety guarantee for on-site construction. Shotcrete anchors are often used in the support forms of such projects, and the construction of anchor rods is an important part of them. The most commonly used bolt grouting material is cement mortar, and a steel bar or steel pipe is often used as the rod body. This kind of bolt can exert its proper supporting capacity when the surrounding rock properties are good. [0003] When the tunnel is located in grade IV or grade V surrounding rock with poor surrounding rock properties, the broken rock mass may not only cause the collapse of the hole and make it difficult to f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00E21D20/02
CPCE21D21/0026E21D21/006E21D21/0033E21D21/0086E21D20/025Y02E10/20
Inventor 陈云娟李昊霖周岐文田涛鸣刘梦悦赵晓平王乐宁贾润枝
Owner SHANDONG JIANZHU UNIV
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