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A kind of inorganic reinforcement material for ultra-speed mining and its preparation method

A reinforcing material and inorganic technology, applied in the field of inorganic reinforcing materials for ultra-speed mining and their preparation, can solve the problems of heat accumulation in goaf, fire in goaf, high reaction temperature, small shrinkage, improved curing performance, safety good effect

Active Publication Date: 2021-11-30
山西澳华工矿山支护科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing polymer chemical materials have the following deficiencies in the grouting operation of the working face: 1. The reaction temperature is high during use, which may easily cause heat accumulation in the goaf, which may cause safety hazards in the goaf; 2. High The cost of grouting reinforcement with molecular chemical materials is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Including a component raw material and B component feedstock, the A component feedstock and B component feedstock are compared according to mass fraction 1: 1; wherein the A component feedstock comprises 575 calcium aluminate powder. 70 parts of gypsum powder, silicate cement 265; the B component feedstock includes 690 silage silicate cement, 255 parts of super fine cement, 1 order of longevity, and each powder is 15 mm or less;

[0025] When mixed, 575 calcium sulfide powder were mixed with a hydraulous sulfide powder, and 265 parts of gypsum powder 70 and 265 parts of silicate cement were mixed. It is 0.3: 1; 690 parts of the slag silicate, more than 285 parts of ultrafine cement, and 1 part of the suspension, and the mixture is mixed, and the mixture is mixed and stirred into B slurry, the water ash ratio is 0.3: 1; A slurry B slurry is mixed with a mass fraction than 1: 1 to obtain an overspeeding inorganic reinforcement material;

[0026] When using this embodiment, th...

Embodiment 2

[0028] Including a component raw material and B component feedstock, the A component feedstock and B component feedstock are compared according to mass fraction 1: 1; wherein the A component feedstock comprises anhydrous sulfur-aluminate powder 610 parts. 90 parts of gypsum powder, 300 silicate cement; the B component feedstock includes 690 silage silicate cements, more than 305 parts of super fine cement, 5 servants, and the particle size of each powder is 15mm or less. ;

[0029] When mixed, there was 610 copper sulfide powder, 90 gypsum powder, 300 parts of the silicate cement, mixed with a mixed grade material, mixed with water, mix stirred, mixed, a slurry, a slurry water ash The ratio is 0.3: 1; 690 parts of the slag silicate, 305 parts of ultrafine cement, and 5 parts of the suspension are mixed, and the mixture is mixed, and the mixture is mixed and stirred into B slurry, the water ash is 0.3 : 1; A slurry B slurry is mixed with a mass fraction than 1: 1 to obtain an overs...

Embodiment 3

[0032] Including a component raw material and B component feedstock, the A component feedstock and B component feedstock are compared according to mass fraction 1: 1; wherein the A component raw material comprises anhydrous sulfur-aluminate powder 625 parts. 90 parts of gypsum powder, 350 silicate cement; the B component feedstock includes 720 pieces of slag silicate cement, 315 parts of super fine cement, 1 order of longevity, and each powder is 15mm or less. ;

[0033] When mixed, there was 625 calcium aluminate powder, 90 parts of gypsum powder, 350 parts of silicate cement normal temperature, mixed with a mixed gray, add water mixed, stirred into a slurry, a slurry water ash The ratio is 0.3: 1; 720 parts of the slag silicate cement, 315 parts of ultra-fine cement, 1 parts of the suspension, uniformly form a B mixed gray, mixed with water, mix stirred to prepare a B slurry, the water ash ratio is 0.3 : 1; A slurry B slurry is mixed with a mass fraction than 1: 1 to obtain an o...

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Abstract

The invention discloses an inorganic reinforcement material for super-speed mining and a preparation method thereof. The material includes raw materials of component A and raw materials of component B, and the raw materials of component A and component B are proportioned according to the mass fraction; wherein, The raw materials of component A include calcium sulfoaluminate: 575-625 parts, gypsum powder: 70-90 parts, portland cement: 265-350 parts; the raw materials of component B include slag Portland cement: 690-720 parts Parts, superfine cement: 285‑315 parts, retarder: 1‑8 parts. The beneficial effect is that: after grouting with this material, the uniaxial compressive strength is not less than 10MPa in 1 hour, the uniaxial compressive strength is not less than 20MPa in 3 hours, the uniaxial compressive strength is not less than 40MPa in 8 hours, and the flexural strength is not less than 8MPa, the bonding strength is not less than 7Mpa, and the curing performance is good; the reaction temperature during the curing process is ≤30°C, the heat generation is small, and the safety is good; the shrinkage is small, the fluidity is good, the particle size of the ingredients is small, and it can penetrate under the pump pressure Into tiny cracks to further improve curing performance.

Description

Technical field [0001] The present invention relates to the technical field of inorganic reinforcement materials, and more particularly to an overspeed mineral inorganic reinforcement material and a preparation method thereof. Background technique [0002] During the production process of coal mine, topboard management is the most important factor in safety management, and with the increase in mining and the impact of adjacent working faces, it is easy to cause coal body breakage, reduce the coal strength of the work surface. It is easy to cause safety hazards such as sheets, colors, so that grouting is required to improve the work surface to improve the stability of the coal. The existing working surface grout is reinforced with polymer chemical materials. The existing polymer chemical material exists in the working surface of the working surface. The following is less than: 1. The reaction temperature is high during use, which is easy to cause heat gathering of the vacuum area,...

Claims

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Application Information

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IPC IPC(8): C04B28/14
CPCC04B28/14C04B2111/00724C04B2201/50C04B22/14C04B7/02C04B7/14C04B2103/22
Inventor 乔烈燕高超张海龙董艳琦
Owner 山西澳华工矿山支护科技有限公司
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