Check anti-water-bursting grouting rock bolt

A technology for grouting bolts and preventing water inrush, which is applied to the installation of bolts, sheet pile walls, mining equipment, etc., and can solve problems such as difficult operation, complicated processing, and injury to people by grouting, and achieves low cost, wide range of sources, The effect of fast processing and installation

Inactive Publication Date: 2013-07-17
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the installation of grouting bolts, there are mainly two types of plugging between the rod body and the hole wall: 1) Resin drug coil or cement drug coil anchoring, which not only seals the hole wall, but also positions the anchor rod. It is difficult to guarantee that if the hole wall is not well formed or there is water leakage, the material consumption will increase exponentially, and it will even be difficult to seal; 2) The conical compression rubber sleeve is sealed, and the conical head is welded to the hole of the rod body. The rubber sleeve of the tapered hole is used to seal the hole, which is complicated to process and consumes a lot of materials
The grouting pipe itself does not have the function of stopping the grouting. Generally, after the grouting is completed,

Method used

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  • Check anti-water-bursting grouting rock bolt

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Embodiment Construction

[0028] The present invention is described in detail below with reference to accompanying drawing and embodiment:

[0029] attached figure 1 It can be seen that a grouting bolt for reverse prevention of water inrush includes: a grouting pipe 1, a hole wall plugging device and a grouting hole 18 arranged on the grouting pipe, and the grouting pipe 1 is provided with an orifice check valve.

[0030] The orifice check valve is composed of check valve screw rod 4, adjusting spring nut 5, stage clip baffle 7, stage clip 8, positioning retaining ring 9, pin seat 10, fast wire pin 11, airtight sleeve 12, airtight ball 13 Composition, the grouting pipe 1 is provided with a through hole, the airtight sleeve 12 is fixed on the grouting pipe 1 by the fast wire pin 11, the outer side of the airtight sleeve 12 is provided with a pin seat 10, and the pin seat 10 is provided with a mounting hole, and the pin seat 10 is provided with a mounting hole. The outer side of the mounting hole of th...

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Abstract

A check anti-water-bursting grouting rock bolt comprises a grouting pipe, a hole wall plugging apparatus and a grout ejection hole which is arranged on the grouting pipe. A hole check valve is arranged in the grouting pipe and composed of a check valve screw, a spring adjustment nut, a compression spring stopping sheet, a compression spring, a locating check ring, a pin base, a fast screw pin, a closed sleeve and a closed ball. The grouting pipe is provided with a through hole, the closed sleeve is fixed on the grouting pipe through the fast screw pin, the pin base is arranged outside the closed sleeve and provided with a mounting hole, the locating check ring is arranged outside the mounting hole of the pin base, the check valve screw is connected with the closed ball through the mounting hole of the pin base and the locating check ring, the compression spring is arranged on the check valve screw, the compression spring stopping sheet is arranged outside the compression spring, and the spring adjustment nut is arranged outside the compression spring. The check anti-water-bursting grouting rock bolt is provided with pressure maintaining and anti-water-bursting functions, capable of being stored separately and machined and mounted rapidly, wide in source, low in cost and capable of performing grouting in a sectional and adjustable mode.

Description

technical field [0001] The invention relates to the field of drilling and grouting in mines and geotechnical engineering, and is suitable for waterproof grouting and high-pressure crack grouting that require rapid plugging and pressure maintaining and backstopping functions. Grouting anchor. Background technique [0002] Bolt grouting technology is widely used in engineering fields such as coal mine shafts, tunnels, slopes and building foundations, and has good technical and economic effects for strengthening surrounding rock and sealing cracks. In the installation of grouting bolts, there are mainly two types of plugging between the rod body and the hole wall: 1) Resin drug coil or cement drug coil anchoring, which not only seals the hole wall, but also positions the anchor rod. It is difficult to guarantee that if the hole wall is not well formed or there is water leakage, the material consumption will increase exponentially, and it will even be difficult to seal; 2) The ...

Claims

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Application Information

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IPC IPC(8): E21D21/00E02D5/74
Inventor 刘建庄李佳郭立稳刘树弟刘起于浑宝炬甘丽朱令起谷守云
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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