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Segmented hollow grouting anchor cable and using method thereof

A grouting anchor cable and segmented technology, which is applied in the direction of earth drilling, bolt installation, mining equipment, etc., can solve the problem of unsatisfactory support, uneven grouting, and inability to strengthen the deep surrounding rock by segmented grouting To achieve the effect of strengthening full-length anchorage, improving safety effect and simple structure

Active Publication Date: 2018-11-06
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to make up for the deficiencies of the prior art, the present invention proposes a segmented hollow grouting anchor cable and its use method, which solves the problem that the existing anchor cable cannot carry out segmented grouting reinforcement to deep surrounding rocks, and is beneficial to improve the cracks in deep rock formations. The amount of grouting can significantly improve the effect of grouting reinforcement or plugging, and prevent problems such as uneven grouting or unsatisfactory support after grouting caused by shallow grouting

Method used

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  • Segmented hollow grouting anchor cable and using method thereof
  • Segmented hollow grouting anchor cable and using method thereof
  • Segmented hollow grouting anchor cable and using method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0034] As an embodiment of the present invention, there are two segmented hole sealing devices, which divide the cable body 1 into three areas, namely the grouting area A, the grouting area B, and the grouting area C. A is the tail end of the cable body 1 to the top of the fixing frame 6 of the first hole sealing device, B is the top of the fixing frame 6 of the first hole sealing device to the top of the fixing frame 6 of the second hole sealing device, C is the top of the fixing frame 6 of the second hole sealing device From the top of the fixing frame 6 of the two sealing devices to the front end of the cable body 1; the grouting sequence is from section C-section B-section A.

[0035] There is a through grouting hole in the cable body 1; a grout hole is provided at the cable body corresponding to the sealing device, and there is lubrication between the sealing plug 7 and the grout hole of the cable body 1 so that the sealing plug can Moving up and down along the cable body...

Embodiment 1

[0046] A1, assemble the segmented hole sealing device: open the inner slurry bag 11 partly, set the nylon hook and loop 12 at the opening, and the upper end of the nylon hook and loop 12 is connected with the operating rope 8, so that the operating rope 8 can pull the nylon stick in the future. Buckle 12, inside solid slurry bag 11 packs into chemical slurry A, and outside solid slurry bag 10 packs into chemical slurry B. The inner slurry bag 11 is connected with the outer slurry bag 10 by means of rope joints, and the operating rope 8 is drawn out from the rope joints so that it can be freely operated without being affected. Tie the rope joint between C and B and the reserved area between B and A to make it stable, install the fixing frame 6 tighter nuts, and complete the installation of the segmented hole sealing device.

[0047] A2, seal the slurry hole: apply lubricant on the sealing plug 7, block the slurry hole in the B and A areas, put a thicker sleeve 5 on the A area, ...

Embodiment 2

[0051] Embodiment two: (the second sealing method)

[0052] B1, Assemble segmented hole sealing device: adjust 0.9~1.3kg / m static expansion agent with appropriate amount of water to form a fluid slurry, put the mixed fluid slurry into the external solid slurry bag 10, and put the rope joint Tie it between C and B and the reserved area between B and A to make it stable, install the fixing frame 6 tighter nuts to ensure its tightness, and complete the installation of the segmented hole sealing device.

[0053] B2, seal the slurry hole: apply lubricant on the sealing plug 7, block the slurry holes in the B and A areas, put a thicker sleeve 5 on the A area, and put a thinner sleeve on the B area Tube 5, to ensure its tightness.

[0054] B3, Drilling: Drill holes 9 for the required support in the roadway, reserve the lengths of the pre-determined C and B grouting areas in the front section of the cable body, and between C and B and between the lengths reserved for B and A Simulta...

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Abstract

The invention relates to the field of geotechnical engineering supporting, in particular to a segmented hollow grouting anchor cable and a using method thereof. The segmented hollow grouting anchor cable comprises an anchor cable body and a segmented hole sealing device. The anchor cable body comprises a cable main body (1), a tail body nut (2) and a cushion plate (3). The cushion plate (3) is mounted on the cable main body (1), and the tail body nut (2) is connected to the position, on one side of the cushion plate (3), on the cable main body (1) in a threaded mode. The segmented hole sealingdevice comprises a hole sealing plug (7) arranged on the cable main body (1), and the outer side of the hole sealing plug (7) is sleeved with a sleeve (5). One side of the sleeve (5) is sleeved witha fixing frame (6), and a slurry fixing bag is placed in the fixing frame (6). The segmented hollow grouting anchor cable is simple in structure and convenient to machine, the defects of an existing grouting anchor cable are overcome, the problem that as for the existing grouting anchor cable for supporting, the grouting effect is poor is solved, the working efficiency is improved, and the supporting cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering support, in particular to a segmented hollow grouting anchor cable and its use method. 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 preferred methods. The method is to use the bonding and coagulation mechanism of the injected grout to strengthen the surrounding rock through grouting anchor cables, grouting anchor rods, etc., and significantly improve Support, water blocking and other effects. [0003] At present, there are problems with the use of grouting anchor cables: using anchor cable grouting, the hole depth can even reach hundreds of meters, and the grout injected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D20/02E21D21/00
CPCE21D20/02E21D21/00
Inventor 成云海于永春庞继禄李峰辉顾玉明游先中刘思佳李希琨
Owner ANHUI UNIV OF SCI & TECH
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