Geotechnical engineering sectional type hollow grouting anchor cable device

A technology for grouting anchor cables and geotechnical engineering, applied in the field of anchor cables, can solve the problems of inability to use, operate, and troublesome grouting in sections, save re-injection or repair costs, ensure grouting pressure, and reduce labor intensity Effect

Active Publication Date: 2021-02-23
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a geotechnical engineering segmented hollow grouting anchor cable device, to solve the problem of existing grouting anchor cable, injection There are technical problems such as grouting bolts, grouting devices, etc., which cannot be grouted in sections according to needs and are troublesome to use and operate.

Method used

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  • Geotechnical engineering sectional type hollow grouting anchor cable device
  • Geotechnical engineering sectional type hollow grouting anchor cable device
  • Geotechnical engineering sectional type hollow grouting anchor cable device

Examples

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Embodiment 1

[0028] Embodiment one: if figure 1 As shown, the geotechnical engineering segmented hollow grouting anchor cable device in this embodiment includes a hollow grouting anchor cable 1, and the hollow grouting anchor cable includes a grouting inner tube 101 and is spirally wrapped in the grouting Steel strand 102 around the pipe. The grouting inner pipe is provided with several grouting holes 103 from top to bottom, and the positions of the grouting holes are set according to the specific stratum segmental grouting requirements. The rest of the grouting holes are applied to the constant pressure sealing sleeve 104 for sealing the grouting hole one by one. The part of the stranded wire is stretched to form the grouting part; each constant pressure sealing sleeve has its own standard pressure range, when the grouting pressure is higher than its standard pressure range, the constant pressure sealing sleeve is broken, and when the grouting pressure is The constant pressure sealing s...

Embodiment 2

[0042] Embodiment two: if Figure 5 As shown, the segmented hollow grouting anchor cable device for geotechnical engineering in this embodiment includes a hollow grouting pipe 5, and several grouting holes 103 are arranged on the hollow grouting pipe from top to bottom. The position is set according to the requirements of the specific stratum segmented grouting. The grouting inner pipe is covered with a constant pressure sealing sleeve 104 that is used to seal the grouting holes one by one with the rest of the grouting holes except the uppermost grouting hole. The two ends of the pressure sealing sleeve are fixed on the grouting inner pipe through quick pipe clips 105, and the fast pipe clips partially stretch the steel strands to form the grouting part; each constant pressure sealing sleeve has its own standard pressure bearing range, when the grouting pressure is higher than its standard pressure range, the constant pressure sealing sleeve is broken, and when the grouting pr...

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Abstract

The invention discloses a geotechnical engineering sectional type hollow grouting anchor cable device. The device comprises a hollow grouting anchor cable or a hollow grouting pipe, and further comprises sectional isolators; the hollow grouting anchor cable comprises a grouting inner pipe and a steel strand; a plurality of grout outlet holes and constant-pressure sealing sleeves used for sealing the grout outlet holes are arranged on the grouting inner pipe or the hollow grouting pipe; the sectional isolators are arranged on the hollow grouting anchor cable or the hollow grouting pipe; and thesectional isolators are arranged among the grout outlets formed in the hollow grouting anchor cable or the hollow grouting pipe. According to the geotechnical engineering sectional type hollow grouting anchor cable device, due to the arrangement of the sectional isolators and the constant-pressure sealing sleeves, corresponding sectional and graded grouting can be conducted according to differentreinforcing or sealing requirements of stratum surrounding rock of different parts, the grouting amount of deep surrounding rock can be increased according to needs, the grouting reinforcing or sealing effect can be remarkably improved, a large amount of re-injection or re-repair cost is saved, and particularly potential safety risks caused by surrounding rock collapse and re-repair can be effectively avoided.

Description

technical field [0001] The invention relates to the technical field of anchor cables, in particular to a hollow grouting anchor cable. Background technique [0002] Geotechnical engineering such as subways, tunnels, slopes, wells, culverts, dams, etc., in the case of geological fracture zones, some soft rocks, easy-to-fall pieces, landslide instability, large deformation, water discharge or water inrush danger, In the case of piping, etc., grouting reinforcement is one of the commonly used methods. This method is to inject grout into the rock mass through grouting anchor cables, grouting anchor rods, etc., and use the bonding and coagulation mechanism of the injected grout to achieve reinforcement of the surrounding rock. , Significantly improve the effects of support and water blocking. [0003] At present, there are problems with the use of grouting anchor cables: when using anchor cable grouting, less grout is injected in the deep part of the hole or in the geologically ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00E21D20/02E02D3/12E02D5/74
CPCE21D21/0026E21D20/02E21D20/028E02D3/12E02D5/74
Inventor 成云海王一帆夏均民刘兆伟
Owner SHANDONG UNIV OF SCI & TECH
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