A colloidal foam fire extinguishing agent suitable for high-level fire sources and concealed fire sources in coal mines

Abstract

The invention provides a colloidal foam fire extinguishing agent suitable for high-level fire sources and concealed fire sources in coal mines, and belongs to the technical field of fire extinguishing agents. The colloidal foam fire extinguishing agent suitable for high-level fire sources and concealed fire sources in coal mines provided by the present invention includes the following components in mass percentages: 1-4% of refractory soil, 20-30% of foaming agent, 3-7% of cooked rubber powder, Fly ash 1-10%, the rest water. The colloidal foam fire extinguishing agent provided by the present invention has a foam stabilization time of more than 100 hours, which can effectively avoid the phenomenon of "flowing along the channel" and the phenomenon of slurry deterioration on the working surface; Cracks accumulate and cover a wide area, which can effectively extinguish fire sources at high positions and hidden places with cracks. It is suitable for controlling fire sources in complex underground coal mines. When foam encounters high-temperature coal bodies in application, it can absorb the heat of coal bodies, and aggregates are adsorbed on them. In the coal body or cracks, a layer of water colloid is formed to absorb heat, cool down and isolate oxygen.

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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