Mine inhibition type ultra-high water fire preventing and extinguishing material based on coal spontaneous combustion mechanism and preparation method thereof

Abstract

The invention discloses a mine inhibition type ultra-high water fire preventing and extinguishing material based on the coal spontaneous combustion mechanism and a preparation method thereof and relates to the field of spontaneous combustion inhibition of fire preventing and extinguishing of coal mines. The mine inhibition type ultra-high water fire preventing and extinguishing material is composed of materials A, materials B and water. The materials A comprise, by mass, 60%-85% of sulphoaluminate cement, 0.5%-5% of calcium formate, 2%-10% of polyethylene glycol 400, 5%-18.5% of calcium sulfate, 1.5%-7% of calcium oxide and 2%-5% of calcium chloride. The materials B comprise, by mass, 0.3%-2% of ascorbic acid, 15%-25% of sodium aluminate, 33%-50% of calcium oxide, 3%-10% of sodium sulfate and 13%-30% of calcium sulfate. The mass ratio of the materials A to the materials B is 5-7:1. The mass ratio of the total mass of the materials A and the materials B to the mass of the added water is 1: (8-11). The cost is low, environmental friendliness is achieved, the sources of the raw materials are abundant, the mine inhibition type ultra-high water fire preventing and extinguishing material has the functions of rapid cooling and chemical inhibition extinguishing and can regionally prevent and treat coal spontaneous combustion, and reburning and occurrence of new peripheral combustion sources are prevented while the coal spontaneous combustion disaster is treated efficiently.

Description

technical field [0001] The invention relates to the field of spontaneous combustion and chemical resistance for fire prevention and extinguishing in coal mines, in particular to a chemical resistance type ultra-high water resistance fire extinguishing material based on coal spontaneous combustion reaction mechanism and a preparation method thereof. Background technique [0002] Coal spontaneous combustion is one of the main disasters in my country's coal mines. It occurs mostly in goafs and other areas, and it is easy to form hidden fire sources. It is difficult for fire-proof materials to reach the corresponding areas directly, resulting in frequent fire sources and serious consequences for re-ignition. At present, traditional grouting, inert gas injection (nitrogen, liquid nitrogen and carbon dioxide, etc.), foam injection (two-phase and three-phase foam), spraying of physical inhibitors and gel injection (organic and inorganic) are mostly used in coal mine fire prevention ...

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Problems solved by technology

[0005] Technical problem to be solved: Aiming at the problems in the prior art such as short fire prevention time period, limited coverage, high cost and easy to cause underground pollution, the present invention provides a chemical resistance type ultra-high water fire prevention material based on the coal spontaneous combustion reaction mechanism And the preparation method thereof can achieve high-efficiency control of the fire zone by blocking oxygen barrier, rapid cooling of high-solid water and blocking the key hydroxyl radicals of coal oxidation on the basis of low cost and high safety and environmental protection. The moisture in the chemical inhibitor forms a regional chemical resistance atmosphere to prevent the development and recombustion of the surrounding spontaneous combustion, and the resistance gas escapes in the air leakage air flow, which can control the spontaneous combustion of coal in the air leakage area on a large scale

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