Spray-coating sealing material for coal rock mass

A coal rock mass and sealing material technology, applied in the field of organic/inorganic composite materials, can solve problems such as unsatisfactory curing speed and poor fluidity

Inactive Publication Date: 2013-06-19
山东固安特新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Although traditional cement-based materials have good bond strength and flame retardancy, they generally have the problem of poor fluidity and unsatisfactory curing speed.

Method used

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  • Spray-coating sealing material for coal rock mass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0099] According to the amount of polyvinyl acetate emulsion, acrylic emulsion (using pure acrylic emulsion, styrene-acrylic emulsion or vinegar-acrylic emulsion respectively), ethylene-vinyl acetate (VAE) emulsion, and styrene-butadiene emulsion listed in the following table 1, after mixing, 4Kg of polymer emulsions A-Q were prepared respectively for subsequent use.

[0100] polymer emulsion

[0101] According to the dosages listed in Table 2 below, mix the involved fly ash, cement, sugar, gypsum, clay, and fiber materials evenly to prepare 2Kg of high flame-retardant powder materials for later use.

[0102]

[0103] Randomly select one group from the 17 kinds of polymer emulsions in Table 1, and mix them one by one with any group of the 7 kinds of high flame-retardant powder materials in Table 2 according to the ratio of 2:1 to prepare 119 A kind of coal and rock mass spraying sealing material.

[0104] These coal and rock mass spray sealing materials all meet ...

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PUM

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Abstract

The invention provides a spray-coating sealing material for coal rock mass, belonging to the technical field of organic/inorganic compound materials. The spray-coating sealing material for the coal rock mass is a complex of high-molecular emulsion and high-flame-retardant powder materials, without any toxic and harmful substances, free of springback for construction, safe and environmental protective. When sprayed at vertical surfaces and top surfaces, the material does not flow and sag, and is good in overall effect. After curing, the coating has advantages of strong adhesion stress, high tensile strength, large tensile deformation, and excellent sealing performance. The material can be used for surface protection of the coal rock mass, air leakage prevention, gas leakage prevention, and rapid surface protection and moistureproof treatment after tunneling of swelling rock.

Description

technical field [0001] The invention relates to a spray-coated airtight material for coal and rock mass, and belongs to the technical field of organic / inorganic composite materials. Background technique [0002] In my country's energy industry, coal accounts for 70% of primary energy production and consumption, so coal will remain my country's main energy source for a long period of time. Therefore, coal mine safety is the top priority of my country's safety production work. [0003] Cracking of coal and rock mass leads to gas accumulation, water leakage, air leakage and other problems, which are the main reasons affecting the safety of coal mines. Coal and rock mass spraying sealing technology is one of the methods to eliminate these disasters. It injects the coal-rock mass sprayed sealing material into the cracks or pores of the coal-rock mass by means of hydraulic pressure and air pressure, and then solidifies, so that the coal-rock mass forms a new structure with high s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/08C04B28/14
Inventor 刘鹏郭茹张宁宁
Owner 山东固安特新材料科技股份有限公司
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