Thin spraying material for reinforcing, beautifying, supporting and sealing coal mine roadway

A coal mine roadway, thin spray technology, used in tunnels, tunnel linings, mining equipment and other directions

Inactive Publication Date: 2021-05-14
江苏科巷矿山科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of thin-sprayed material used for the reinforcement, beautification, suppo

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The invention provides a technical solution: a thin-sprayed material for reinforcement, beautification, support and closure of coal mine roadways, which includes the following components: Portland cement; sand; stones: fly ash; polyurea rubber powder; acrylate copolymer emulsion ; Accelerator; Graphite; Additive;

[0021] Portland cement chooses P.O.42.5.

[0022] The fly ash is selected from the first-grade fly ash, and the fineness of the first-grade fly ash is 8-12.

[0023] The content of polyurea rubber powder accounts for 0.01%. The addition of polyurea rubber powder enables the thin spray material to be constructed normally under extremely harsh environmental conditions, which increases the scope of application of the thin spray material. At the same time, it can make the thin spray material Wear-resistant, waterproof, impact-resistant, fatigue-resistant, aging-resistant, high-temperature resistant, nuclear radiation-resistant and many other functions.

[0024]...

Embodiment 2

[0033] The invention provides a technical solution: a thin-sprayed material for reinforcement, beautification, support and closure of coal mine roadways, which includes the following components: Portland cement; sand; stones: fly ash; polyurea rubber powder; acrylate copolymer emulsion ; Accelerator; Graphite; Additive;

[0034] Portland cement is one of P.O.52.5 ordinary Portland cement.

[0035] The fly ash is selected from the first-grade fly ash, and the fineness of the first-grade fly ash is 8-12.

[0036] The content of polyurea rubber powder accounts for 0.02%. The addition of polyurea rubber powder enables the thin spray material to be constructed normally under extremely harsh environmental conditions, which increases the scope of application of the thin spray material. At the same time, it can make the thin spray material Wear-resistant, waterproof, impact-resistant, fatigue-resistant, aging-resistant, high-temperature resistant, nuclear radiation-resistant and many...

Embodiment 3

[0046] The invention provides a technical solution: a thin-sprayed material for reinforcement, beautification, support and closure of coal mine roadways, which includes the following components: Portland cement; sand; stones: fly ash; polyurea rubber powder; acrylate copolymer emulsion ; Accelerator; Graphite; Additive;

[0047] Portland cement is one of P.O.62.5 ordinary Portland cement.

[0048] The fly ash is selected from the first-grade fly ash, and the fineness of the first-grade fly ash is 8-12.

[0049] The content of polyurea rubber powder accounts for 0.03%. The addition of polyurea rubber powder enables the thin-sprayed material to be constructed normally under extremely harsh environmental conditions, which increases the scope of application of the thin-sprayed material. At the same time, it can make the thin-sprayed material It has many functions such as waterproof, aging resistance, high temperature resistance, etc., so that the service life of the thin spray mate...

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PUM

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Abstract

The invention discloses a thin spraying material for reinforcing, beautifying, supporting and sealing a coal mine roadway. The thin spraying material comprises the following components: Portland cement, sand, stone, fly ash, polyurea rubber powder, acrylate copolymer emulsion, an accelerator, graphite, an additive, a water reducing agent and an auxiliary agent. The thin spraying material for reinforcing, beautifying, supporting and sealing the coal mine roadway has the characteristics of no toxic gas release, high construction speed, rust resistance, flame retardance, static resistance and the like, can effectively overcome the defects of low construction speed, poor labor environment, large auxiliary transportation amount, multiple potential safety hazards and the like in the existing concrete spraying technology, is a green and environment-friendly material for spraying the underground coal mine roadway, can be used for beautifying the roadway, improving the pollution resistance of the roadway and improving the quality standardization level of the roadway, and can perfectly replace underground paint or oil paint; and the bonding strength of the non-reactive thin spraying sealing material with a coal rock wall and a metal net reaches 2MPa or above, the adhesion force is high, the material is anti-aging and does not fall off, and weathering of a coal rock layer and corrosion of the metal net are effectively prevented.

Description

technical field [0001] The invention relates to the technical field of thin-sprayed materials, in particular to a thin-sprayed material used for reinforcement, beautification, support and closure of coal mine roadways. Background technique [0002] Underground anchor mesh support in coal mines is a major change in coal mine support technology, changing passive support to active support has played an important role in improving the economic benefits of coal mines and improving the support effect. However, with the increase of coal mine mining depth, under the force and deformation of the roadway, the pressure on the bolt increases gradually. In some coal mines, the exposed roadways that have completed the anchor mesh support but have not shotcrete, due to the humid air in the mine, the support time after excavation is not long, and the metal mesh will be corroded and the surrounding rock will be weathered. Under the dual effects of underground humidity and dirty air in the r...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D11/15
CPCE21D11/10E21D11/152
Inventor 王强施访
Owner 江苏科巷矿山科技有限公司
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