Colloid foam extinguishing agent suitable for high-position fire source and concealed fire source of coal mine

Abstract

The invention provides a colloid foam extinguishing agent suitable for a high-position fire source and a concealed fire source of coal mine, and belongs to the technical field of extinguishing agents.The colloid foam extinguishing agent suitable for the high-position fire source and the concealed fire source of the coal mine comprises the following components in percentage by mass: 1-4% of refractory soil, 20-30% of a foaming agent, 3-7% of cooked rubber powder, 1-10% of fly ash and the balance of water. According to the invention, the colloid foam extinguishing agent provided by the invention has the advantages that the foam stabilizing time is more than 100 h, and the channeling phenomenon and the phenomenon that the working surface is deteriorated due to slurry collapse can be effectively avoided; and the colloid foam extinguishing agent provided by the invention can be accumulated towards cracks in a high space, so that the foam extinguishing agent is wide in coverage, can effectively extinguish a fire source at a high position and a crack concealing place, is suitable for governing the fire source under complex conditions of an underground coal mine, and can absorb heat of acoal body after foam encounters the high-temperature coal body in application, so that aggregates are adsorbed in the coal body or cracks to form a layer of moisture colloid so as to achieve the effects of heat absorption, cooling and oxygen isolation.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing agents, in particular to a colloidal foam fire extinguishing agent suitable for high-level fire sources and concealed fire sources in coal mines. Background technique [0002] The management of high-level fire sources and hidden fire sources in gobs of underground coal mines has always been a difficult problem in the industry. At present, the conventional fire extinguishing method is to inject yellow mud, or use colloid fire extinguishing agent and foam fire extinguishing agent, but the yellow mud and colloid fire extinguishing agent are based on water and are easy to settle, and the environment of the underground mined-out area is complicated, and the bottom plate is uneven. It is difficult to control the concealed fire source, coupled with the existence of falling coal and gangue, it is easy to form gullies and run out of grout, it is difficult to pile up the grouting amount to a cert...

AI Technical Summary

Problems solved by technology

At present, the conventional fire extinguishing method is to inject yellow mud, or use colloid fire extinguishing agent and foam fire extinguishing agent, but the yellow mud and colloid fire extinguishing agent are based on water and are easy to settle, and the environment of the underground mined-out area is complicated, and the bottom plate is uneven. It is difficult to control the concealed fire source, coupled with the existence of falling coal and gangue, it is easy to form gullies and run out of grout, it is difficult to pile up the grouting amount to a certain height, and the suppression effect on high-level fire sources is also poor; while conventional foam fire extinguishing The agent has fluidity, which can meet the complex environment of coal mines, but the conventional foam fire extinguishing agent defoams quickly, and the defoaming time is generally 4 to 10 hours, and the water after defoaming will flow to the low-lying place in an instant, and cannot Extinguish the high-level fire source within time

It can be seen that there is still no fire extinguishing agent that can effectively control high-level fire sources and hidden fire sources in coal mines at present.

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