Coal mine roadway spraying material and preparation method thereof

A spraying material and roadway technology, applied in the direction of cement coating, anti-corrosion coating, fire-proof coating, etc., can solve the problems of easy water absorption and deliquescence or expansion, gas gushing out of the goaf, and great influence of coating dust, etc., to achieve high toughness and elasticity , good support and high support strength

Active Publication Date: 2021-08-24
CHONGQING VOCATIONAL INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Coal mine strata are mostly coal rock, mudstone, sandstone or clay rock, etc., with poor mechanical properties, poor stability, easy weathering, and very easy to absorb water and deliquescence or expand. If not treated, it will easily lead to roadway instability and damage; and some The roadway needs to pass through the goaf of the coal seam, and there is a large amount of CH in the goaf 4 , CO and other harmful gases, roadway ventilation can easily lead to gas gushing out of the goaf, so it is necessary to control the air leakage problem in the roadway; in addition, the coal seam of the roadway has a high sulfur content and a high tendency of spontaneous combustion, so most mine roadways will be sprayed on the wall

Method used

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  • Coal mine roadway spraying material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] A coal mine mine lane spray material comprising two layers of a base layer and a surface layer, the base layer is made of a material of the following weight parts: 42.5 silicate cement, 35 pieces of fly ash, 8 clay, 4 deposition of latex powder 15 parts of the fiber reinforcement material, 0.2 cophenthraneum emulsions, 0.2 parts of polyvinyl alcohol, 1 part of water glass and 35 parts of water, the surface layer as a polyurethane foam layer.

[0027] The polyurethane layer is made of a raw material having a number of parts by weight of the polyether polyol (17.5 parts of polyether polyol, 17.5 serial toluocyanates, 3 parts of phenol resin, 8 dimethylsilicone oil, 1 part of diethylene glycol, catalyst 1 serving, 1.5 parts of trihydroxypropane, 10 hollow glass micro-balls, 12 parts of fiber reinforced material, 5 water glass and 3 deionized water.

[0028] The catalyst is bilateral di-dika titanate and triamine is mixed by weight ratio of 2: 1.

[0029] The...

Example Embodiment

[0035] Example 2

[0036] A coal mine mine road spray material comprising two layers of the base layer and the surface layer, the base layer is made of raw material of the following weight parts: 2,000 silicate cement, 32 pieces of fly ash, 9 copies, 5 depolar powder, The fiber reinforcing material was 14 parts of the phenylatoxide, 0.18 parts of polyvinyl alcohol, 1.2 parts of water glass and 38 water, and the surface layer is a polyurethane layer.

[0037] The polyurethane layer is made of a raw material of the following weight parts: 1000 polyether polyols (17.5 parts of toluene, 4 parts of toluene, 4 parts of phenol resin, 8.5 parts of dimethylsilicone oil, 1.2 parts of diethylene glycol, catalyst 1.2 parts, 1.4 parts of trihydroxypropane, 11 hollow glass microads, 11 parts of fiber reinforced material, 6 parts of water glass and 3.5 parts of deionized water.

[0038] The catalyst is bilateral di-dika titanate and triamine is mixed by weight ratio of 2: 1.

[0039] The fiber r...

Example Embodiment

[0042] Example 3

[0043] A coal mine mine lane spray material comprising two layers of the base layer and the surface layer, the base layer is made of a raw material of the following weight parts: 30 parts of silicate cement, 30 drums, 10 clay, 6 depolar powder, 13 parts of the fiber reinforcement material, 0.25 cophenthral emulsions, 0.15 parts of polyvinyl alcohol, 1.5 parts of water glass and 30 parts of water, the surface layer as a polyurethane layer.

[0044] The polyurethane layer is made of a raw material of the following weight parts: 100 parts by polyether polyol (2000), a toluene diisocyanate, 5 parts of the phenol resin, 9 dimethylsilicilicizine oil, 1.5 parts of diethylene glycol, catalyst 1.5 parts, 1.2 parts of trihydroxymethyl propylene, 12 of the microbeads of the hollow glass, 10 parts of fiber reinforced material, 6.5 parts of water glass and 4 deionized water.

[0045] The catalyst is bilateral di-dika titanate and triamine is mixed by weight ratio of 2: 1.

...

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Abstract

The invention discloses a coal mine roadway spraying material, and relates to the technical field of novel materials for mines. The material comprises a base layer and a surface layer, the base layer is prepared from the following raw materials in parts by weight: 25-35 parts of Portland cement, 25-35 parts of fly ash, 8-12 parts of clay, 4-8 parts of latex powder, 10-15 parts of a fiber reinforced material, 0.2-0.3 part of styrene-acrylic emulsion, 0.1-0.2 part of polyvinyl alcohol, 1-2 parts of water glass and 35-42 parts of water, the surface layer is a polyurethane layer, the supporting performance is excellent, corrosion and leakage are prevented, and safe production of a coal mine can be further ensured.

Description

technical field [0001] The invention relates to the technical field of new materials for mines, in particular to a coal mine roadway spraying material and a preparation method thereof. Background technique [0002] Coal mine strata are mostly coal rock, mudstone, sandstone or clay rock, etc., with poor mechanical properties, poor stability, easy weathering, and very easy to absorb water and deliquescence or expand. If not treated, it will easily lead to roadway instability and damage; and some The roadway needs to pass through the goaf of the coal seam, and there is a large amount of CH in the goaf 4 , CO and other harmful gases, roadway ventilation can easily lead to gas gushing out of the goaf, so it is necessary to control the air leakage problem in the roadway; in addition, the coal seam of the roadway has a high sulfur content and a high tendency of spontaneous combustion, so most mine roadways will be sprayed on the wall , the main spraying materials are concrete mate...

Claims

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Application Information

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IPC IPC(8): C09D1/08C09D5/08C09D5/18C09D7/61C09D7/65C09D175/08C08G18/76C08G18/66C08G18/48C08G18/34C08G18/20B05D7/24B05D7/00B05D1/36
CPCC09D1/08C09D5/08C09D5/18C09D7/61C09D7/70C09D7/65C09D175/08C08G18/7614C08G18/6677C08G18/48C08G18/242C08G18/2063B05D7/24B05D7/54B05D1/36B05D2503/00C08L2205/04C08L2205/16C08L2201/02C08L2205/03C08K2003/387C08L23/12C08L61/06C08K13/06C08K9/06C08K7/28C08K3/34C08K7/14C08K9/12C08K3/38
Inventor 郝宇张立辉赵利群
Owner CHONGQING VOCATIONAL INST OF ENG
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