Dry mixing gunite material in use for underworkings of coal mine, and preparation method

An underground roadway and spraying technology, which is applied to clay preparation devices, chemical instruments and methods, cement mixing devices, etc., can solve problems such as waste, large rebound, and great physical hazards for on-site workers, and achieve reasonable proportioning and complete functions Effect

An underground roadway and spraying technology, which is applied to clay preparation devices, chemical instruments and methods, cement mixing devices, etc., can solve problems such as waste, large rebound, and great physical hazards for on-site workers, and achieve reasonable proportioning and complete functions Effect

CN101092047AInactive Publication Date: 2007-12-26ZIBO MINING GRP +1
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 100 parts of cement, 150 parts of quartz sand, 50 parts of heavy calcium carbonate, 0.3 parts of HPMC, 20 parts of vinyl acetate and ethylene copolymer dry milk, 0.2 parts of polypropylene fiber, 10 parts of zinc fluorosilicate, 0.7 parts of naphthalene Water reducer, 0.3 parts of polycarboxylate early strength agent, fully stirred in a twin-screw high-efficiency mixer for 20 minutes, mixed and stirred evenly, then added appropriate amount of water, mixed evenly.

Embodiment 2

[0056] 100 parts of cement, 200 parts of quartz sand, 40 parts of heavy calcium carbonate, 0.2 parts of HPMC, 15 parts of dry milk of vinyl acetate and acrylate copolymer, 0.2 parts of polypropylene fiber, 10 parts of zinc fluorosilicate, 0.6 parts of naphthalene It is a water reducer, 0.3 parts of polycarboxylate early strength agent is fully stirred in a twin-screw high-efficiency mixer for 20 minutes, mix well, then add appropriate amount of water, mix well.

Embodiment 3

[0058] 100 parts of cement, 250 parts of quartz sand, 30 parts of heavy calcium carbonate, 0.2 parts of HPMC, 18 parts of dry milk of vinyl acetate and vinyl tertiary carbonate copolymer, 0.2 parts of polypropylene fiber, 7 parts of zinc fluorosilicate, 0.6 1 part of naphthalene-based water reducer, 0.3 part of polycarboxylate early-strength agent, fully stirred in a twin-screw high-efficiency mixer for 20 minutes, mixed and stirred evenly, then added an appropriate amount of water, and mixed evenly.

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Abstract

The invention relates to a dry-mixed slurry spraying material used in coal mine laneway. It includes concrete, quartz sand or crushed sand, CaCO3, cellulose, and fiber. The feature is that concrete contains 100 portions, quartz sand or crushed sand contains 150-300portions, calcium carbonate is 0-50 portions, HPMC is 0.2-0.3 portions, polymer emulsion is 10-30 portions, polypropylene fiber is 0.1-0.2 portions, zinc fluosilicate is 5-10 portions, water reducing agent is 0.5-0.7 portions, and early strength agent is 0.2-0.3 portions. The method includes the following steps: weighing the raw material accurately, whisking in high efficiency blender for 20 minutes, mixing to equal and packaging. The invention has the advantages of light, high intension, high binding glue, inflaming, water proof, simple manufacturing technology, etc.

Description

technical field [0001] A dry-mixed shotcrete material for coal mine underground roadway and a preparation method thereof, the invention relates to the technical field of a coal mine underground roadway construction shotcrete material and the preparation of the material. Background technique [0002] China's economic development in the past 30 years has achieved world-renowned achievements, but at the same time, the rapidly developing economy has an increasing demand for energy. At present, domestic oil cannot meet the needs of economic development, and it is a strategic state policy of our country to increase the development of domestic abundant coal resources. [0003] For a long time, in the process of mining coal resources, the proportion of investment in safety production facilities and improvement of workers' working environment has been very small. Among them, the underground dust pollution is serious, and the underground dust mainly comes from the coal dust at the mi...

Claims

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Application Information

Patent Timeline
26 Dec 2007
Publication
CN101092047A
IPC
B28C5/00; B28C5/40
CPC
C04B2111/70; C04B2111/00275; C04B2111/28; C04B2111/00724; C04B2111/40; C04B28/02
Inventors
寿崇琦; 刘峰