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Coal mine paste filling material using construction waste and its preparation and filling method

A technology for filling materials and construction waste, applied in the fields of filling materials, mining equipment, earth-moving drilling, etc. Strict and scientific grading, prolonged pumping time and improved filling efficiency

Inactive Publication Date: 2017-09-12
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These treatment methods either occupy a large amount of land resources and cause serious damage to the local ecological environment in our country, or the treatment cost is too high, the product is single, and cannot meet the market demand, the recycling rate is low, and the level of resource utilization technology is relatively backward. Unable to form scale effect, lack of new technology and process

Method used

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  • Coal mine paste filling material using construction waste and its preparation and filling method
  • Coal mine paste filling material using construction waste and its preparation and filling method
  • Coal mine paste filling material using construction waste and its preparation and filling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A coal mine-like paste filling material using construction waste, every 1m 3 The filling material is composed of the following raw materials: coarse aggregate: construction waste 500Kg and coal gangue 450Kg, fine aggregate: fly ash 400Kg and cementing material 250Kg, admixture: accelerator 12.5Kg and water reducer 7.5Kg, mine water 630Kg.

[0034] The construction waste refers to waste concrete blocks, waste sand, waste bricks and tiles, waste stones, ceramic fragments and waste tiles with a particle size of less than 20mm after secondary crushing due to building construction, decoration and demolition. 4.32% are 16mm-20mm, 3.66% are 13.5mm-16mm, 10.82% are 9.5mm-13.5mm, 21.51% are 5mm-9.5mm, and 1mm ~5mm accounted for 29.05%, particle size 0.3mm~1mm accounted for 14.89%, particle size 0.1mm~0.3mm accounted for 8.76%, particle size 0.075mm~0.1mm accounted for 2.34%, 0~0.075mm 4.65%;

[0035] The coal gangue is raw coal mine gangue waste with a particle size of less t...

Embodiment 2

[0048] A coal mine-like paste filling material using construction waste, the filling material per 1m3 is composed of the following raw materials: coarse aggregate: 475Kg of construction waste and 425Kg of coal gangue; fine aggregate: 375Kg of fly ash and cemented Material 225Kg; Additives: Accelerator 9.5Kg and Water Reducer 5.5Kg; Mine Water 630Kg.

[0049] The construction waste refers to waste concrete blocks, waste sand and stones, waste bricks and tiles, waste stones, ceramic fragments and waste ceramic tiles with a particle size of less than 20mm after secondary crushing due to building construction, decoration and demolition. 5% for 16mm-20mm, 2% for 13.5mm-16mm, 15% for 9.5mm-13.5mm, 25% for 5mm-9.5mm, 1mm ~5mm accounted for 25%, particle size 0.3mm~1mm accounted for 15%, particle size 0.1mm~0.3mm accounted for 6%, particle size 0.075mm~0.1mm accounted for 5%, 0~0.075mm 2%;

[0050] The coal gangue is raw coal mine gangue waste with a particle size of less than 20mm ...

Embodiment 3

[0060] A coal mine-like paste filling material utilizing construction waste, the filling material per 1m3 is composed of the following raw materials: coarse aggregate: 450Kg of construction waste and 400Kg of coal gangue; fine aggregate: 350Kg of fly ash and cemented Material: 200Kg; Additives: Accelerator 6.0Kg and Water Reducer 2.0Kg; Mine Water 550Kg.

[0061] The construction waste is waste concrete blocks, waste sand, waste bricks and tiles, waste stones, ceramic fragments and waste tiles with a particle size of less than 20 mm after secondary crushing due to construction, decoration and demolition, wherein the particle size is 16mm~20mm accounted for 1%, particle size 13.5mm~16mm accounted for 5%, particle size 9.5mm~13.5mm accounted for 10%, particle size 5mm~9.5mm accounted for 20%, particle size 1mm~ 5mm accounted for 35%, particle size 0.3mm~1mm accounted for 10%, particle size 0.1mm~0.3mm accounted for 10%, particle size 0.075mm~0.1mm accounted for 4%, 0~0.075mm acc...

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Abstract

The invention provides a coal mine paste-like filling material using construction waste. The material comprises the following raw materials: a coarse aggregate containing 450-500Kg of construction waste and 400-450Kg of gangue; a fine aggregate containing 350-400Kg of fly ash and 200-250Kg of a binder; an admixture containing 6.0-12.5Kg of an accelerator and 2.0-7.5Kg of a water reducer; and 550-630Kg of mine water. According to the invention, construction waste, gangue and other wastes are used to prepare the paste-like filling material with good pumpability, low bleeding rate and degree of stratification, short setting time, high strength and stability, and low cost. The invention also provides a preparation and filling method of the coal mine paste-like filling material using construction waste.

Description

technical field [0001] The invention belongs to the technical field of mine paste, and in particular relates to a coal mine-like paste filling material utilizing construction waste and a preparation and filling method thereof. Background technique [0002] my country's urbanization process continues to accelerate, followed by a sharp increase in urban waste. According to incomplete statistics, construction waste accounts for 30% to 40% of urban waste, and construction waste continues to grow at a rate of 500 to 600 tons per 10,000 square meters per year. According to this rate, the total amount of construction waste in my country will reach More than 20 billion tons, the quantity is quite astonishing. At present, the processing methods of construction waste in my country mainly include open-air stacking, landfill, roadbed filling and brick making. These treatment methods either occupy a large amount of land resources and cause serious damage to the local ecological environm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/16C04B18/12E21F15/00
CPCC04B18/12C04B18/16C04B28/04C04B2111/00724E21F15/005C04B18/08C04B22/14C04B22/148C04B22/0093C04B24/20C04B22/002Y02W30/91
Inventor 史俊伟孟祥瑞高召宁赵光明
Owner ANHUI UNIV OF SCI & TECH
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