Grouting stopping sealing and blocking device and grouting anchor cable hole sealing grouting stopping method

A technology of plugging device and grouting anchor cable, which is applied in the directions of bolt installation, sealing/isolation, earth drilling and mining, etc. More reliable blocking effect, support strength improvement, strength improvement effect

Active Publication Date: 2019-12-20
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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  • Grouting stopping sealing and blocking device and grouting anchor cable hole sealing grouting stopping method
  • Grouting stopping sealing and blocking device and grouting anchor cable hole sealing grouting stopping method
  • Grouting stopping sealing and blocking device and grouting anchor cable hole sealing grouting 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, the cross-section of the inner and outer double-tube structure is circular, and the inner diameter of the double-tube structure is larger than that of the grouting anchor cable 4. Diameter, the annular space...

Embodiment 2

[0046] Yet another specific embodiment of the present invention discloses a method for plugging holes and grouting with grouting anchor cables, using the grouting blocking device in the first embodiment to seal holes and stop grouting, which specifically includes the following steps:

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

[0048] Construction of grouting anchor cable drilling, observation and analysis of the loose ring of the surrounding rock 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 installation height of the grouting blocking structure 11 is determined, and the polyurethane foaming The height of the plugging hole structure formed by the annular space between the grouting anchor cable 4 and the borehole wall formed by filling with the agent, such as Figure 5 shown.

[0049...

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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 Applications(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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