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A grout-stopping device and a grouting anchor cable hole-sealing and grout-stopping method

A technology of grouting anchor cables and plugging devices, which is applied in the installation of anchor rods, sealing/packing, earthwork drilling and mining, etc. It can solve the problems of poor grouting effect, poor reinforcement and support effect, and grout leakage, etc., to achieve Increased strength, more reliable plugging effect, and improved support strength

Active Publication Date: 2020-09-25
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above analysis, the present invention aims to provide a grout stop plugging device and a grouting anchor cable sealing method to solve the poor effect of grout stop when the existing grout stop plug is used to stop grout in broken surrounding rocks. It is prone to grout leakage, which leads to the problem of poor reinforcement and support effect

Method used

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  • A grout-stopping device and a grouting anchor cable hole-sealing and grout-stopping method
  • A grout-stopping device and a grouting anchor cable hole-sealing and grout-stopping method
  • A grout-stopping device and a grouting anchor cable hole-sealing and grout-stopping method

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Embodiment 1

[0036] A specific embodiment of the present invention, such as figure 1 As shown, a kind of anti-slurry plugging device is disclosed, comprising foaming agent nozzle 5 and foaming agent injection pipe 7, one end of foaming agent injection pipe 7 is connected to foaming agent nozzle 5, and the other end is connected to foaming agent storage tank 8 connections; foaming agent nozzle 5 and foaming agent injection pipe 7 can be sleeved on the grouting anchor cable 4, and can move in the borehole along the grouting anchor cable 4; The solidified foam formed by the foaming agent can contact the hole wall to complete the grout blocking. Preferably, the foaming agent nozzle 5 and the foaming agent injection pipe 7 are both inner and outer double-tube structures coaxially arranged. diameter, the annular space of the double tube structure is used for the blowing agent to flow. The junction of blowing agent storage tank 8 and blowing agent injection pipe 7 is provided with switch, the i...

Embodiment 2

[0046] Yet another specific embodiment of the present invention discloses a method for sealing holes and preventing grouting of grouting anchor cables. The method for sealing holes and preventing grouting using the device for preventing grouting in Embodiment 1 specifically includes the following steps:

[0047] Step 1: Determine the sealing position according to the roadway surrounding rock conditions.

[0048] Construction of grouting and anchor cable drilling, observation and analysis of the surrounding rock loosening circle of the roadway through the drilling peeping instrument, the height of the broken surrounding rock 6 area in the shallow part of the surrounding rock is obtained, and then the layout height of the grout blocking structure 11 is determined, and the polyurethane foam The height of the grouting plugging structure formed by filling the annular gap between the grouting anchor cable 4 and the borehole wall, as Figure 5 shown.

[0049] Step 2: install the gro...

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Abstract

The invention relates to a grouting stopping sealing and blocking device and a grouting anchor cable hole sealing grouting stopping method, belongs to the technical field of grouting anchor cable construction, and solves the problems that when an existing grouting stopping plug is used for broken surrounding rock grouting stopping, the grouting stopping effect of slurry is poor, slurry seepage caneasily occur, and the poor reinforcing support effect is further caused. The grouting stopping sealing and blocking device comprises a foaming agent spray head and a foaming agent injection pipe, wherein one end of the foaming agent injection pipe is connected with the foaming agent spray head; the other end of the foaming agent injection pipe is connected with the foaming agent storage tank; each of the foaming agent spray head and the foaming agent injection pipe can be arranged on the grouting anchor cable in a sleeving way and can move in a drill hole along the grouting anchor cable; anda curing foam body formed by the foaming agent sprayed out from the foaming agent spray head can be in contact with the hole wall to complete the grouting stopping sealing and blockage. The grouting stopping sealing and blocking device and the grouting anchor cable hole sealing grouting stopping method have the advantages that the sealing hole sealing and blockage in an expected position is realized; the slurry seepage during the grouting in the broken surrounding rock in a shallow part of a roadway is effectively prevented; the engineering is reliable; the environmental-friendly and energy-saving effects are achieved; and the operation is simple and convenient, and the like.

Description

technical field [0001] The invention relates to the technical field of grouting and anchor cable construction, in particular to a grout-stopping device and a grouting-bolt-cable hole sealing and grout-stopping method. Background technique [0002] Grouting technology is widely used in the field of mines in my country to strengthen and support weak and broken surrounding rocks, and grouting anchor cable grouting support is one of them. [0003] At present, during the grouting construction of domestic and foreign grouting anchor cables, due to the influence of roadway excavation and surrounding working face mining, the surrounding rock in the shallow part of the roadway is very broken. Good, but based on the influence of gravity, it often happens that the grout leaks from the cracks in the shallow broken surrounding rock and does not enter the broken surrounding rock to be reinforced and supported by grouting, resulting in poor grouting effect and poor reinforcement and suppor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/13E21D20/02
CPCE21B33/13E21D20/025
Inventor 姚强岭李立华于元林夏泽李学华郑闯凯
Owner CHINA UNIV OF MINING & TECH
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