End-type multi-stage grout stopping plug of grouting anchor rod and use method thereof

A technology of grouting bolts and grouting plugs, which is used in the installation of bolts, earth-moving drilling, mining equipment, etc. Adaptability, improve work efficiency, spread the effect of long distance

Active Publication Date: 2015-03-25
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the grouting construction using high-pressure hollow grouting bolts, about 80% of the drilled holes have the phenomenon of grout running and overflowing, which cannot achieve the effect of grouting reinforcement and water blocking

Method used

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  • End-type multi-stage grout stopping plug of grouting anchor rod and use method thereof
  • End-type multi-stage grout stopping plug of grouting anchor rod and use method thereof

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] figure 1 Among them, the grout stopper in this embodiment is a rubber product, and each part is integrated; the multi-stage grout stopper at the end of the grouting anchor in this embodiment includes a grout stopper body 6, a grout stopper cap 5 and a primary stopper Slurry tooth 1, second-stage anti-slip tooth 2, third-stage anti-slip tooth 3 and fourth-stage anti-slip tooth 4. The stopper cap 5 is located at the end of the stopper body 6, and the first-stage stopper tooth 1, the second-stage stopper tooth 2, the third-stage stopper tooth 3 and the fourth-stage stopper tooth 4 are on the outer surface of the stopper body 6 superior. The first-level anti-skid teeth 1, the second-level anti-skid teeth 2, the third-level anti-skid teeth 3 and the fourth-level anti-skid teeth 4 are arranged along the direction pointing to the end of the anti-skid ...

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Abstract

The invention discloses an end-type multi-stage grout stopping plug of a grouting anchor rod and a use method thereof. The end-type multi-stage grout stopping plug comprises a grout stopping plug body, a grout stopping cap and multi-stage grout stopping teeth, wherein the grout stopping cap is positioned at the end part of the grout stopping plug body; and the multi-stage grout stopping teeth are arranged on the outer surface of the grout stopping plug body. The invention has the advantages that in order that the friction force of the grout stopping plug at the end of the hollow grouting anchor rod and a drilling wall is increased, the smooth outer wall of the grout stopping plug is made into the multi-stage type similar to screw threads; and by full utilization of the characteristic of volume shrinkage of a rubber product after subjected to external pressure, the friction force of the grout stopping plug at the end of the hollow grouting anchor rod and the drilling wall is increased, no grout leakage and grout overflowing of the high-pressure hollow grouting anchor at the hole end in a grouting process can be ensured, and the purposes of pressurizing and grouting are achieved.

Description

technical field [0001] The invention relates to the field of grouting anchor rods for underground engineering, dams, etc., in particular to a high-pressure hollow grouting anchor rod end-type multi-stage grout stopper for underground engineering and a use method. Background technique [0002] At present, my country's underground engineering, dam and other engineering constructions are booming. As a high-pressure grouting anchor used for grouting, the application field is very high. The hollow grouting anchor can be fully anchored in the entire length of the anchor and give full play to the anchorage of the anchor. Effects and grouting features. However, the hollow grouting anchor rods currently used in the project have phenomena such as grout running and overflowing at the orifice end. The main reason for grout running and overflowing is that the grout plug of the hollow grouting anchor is not sealed well with the wall of the drilled hole that has been constructed, so it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D20/02
Inventor 李海燕张红军李红伟潘光明杨腾侯庆山张延栋
Owner SHANDONG UNIV
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