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Fire fighting method

A mixture and quality technology, applied in fire rescue, earthwork drilling, fire prevention, etc., can solve the problems of water gas explosion, unsatisfactory small range, sudden fire, long injection time, etc., to prevent the generation of water gas, Solve the effect of short storage time and ensure fire extinguishing effect

Inactive Publication Date: 2018-07-31
INNER MONGOLIA YITAI COAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once a fire breaks out underground, the method of directly using water to extinguish the fire is usually adopted, but when water passes through hot coal above 600°C, water gas will be generated, which can easily induce water gas explosion and cause secondary accidents; while the existing yellow mud grouting system inactivation system meets the requirements No small-scale, sudden fires, and poor mobility; Nitrogen injection for fire extinguishing Because nitrogen is easy to leak, it is often necessary to close the fire area first and require a long injection time, the fire extinguishing effect is poor, and the fire area is prone to re-ignition

Method used

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  • Fire fighting method

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Effect test

Embodiment 1

[0026] The present embodiment provides a kind of fire extinguishing method, comprises the following steps:

[0027] Sodium bicarbonate and 5% water were uniformly mixed to obtain a second mixture.

[0028] Mix the water glass with the polyferric sulfate and the remaining water evenly to obtain the first mixture.

[0029] Mix the first mix with 2m 3 / s flow rate and the second mixture at 1.5m 3 / s flow hedging and mixing to obtain the total mixture, and then inject the total mixture to the surface of the coal mine, various gaps and ignition points.

[0030] Wherein, water glass accounts for 13% of total mixture quality, sodium bicarbonate accounts for 3% of total mixture quality, polyferric sulfate accounts for 2% of total mixture quality, and balance is water.

Embodiment 2

[0032] The present embodiment provides a kind of fire extinguishing method, comprises the following steps:

[0033] Sodium bicarbonate and 10% water were uniformly mixed to obtain a second mixture.

[0034] Mix the water glass with the polyferric sulfate and the remaining water evenly to obtain the first mixture.

[0035] Mix the first mix at 2.5m 3 / s flow rate and the second mixture at 2m 3 / s flow hedging and mixing to obtain the total mixture, and then inject the total mixture to the surface of the coal mine, various gaps and ignition points.

[0036] Wherein, water glass accounts for 20% of total mixture quality, sodium bicarbonate accounts for 15% of total mixture quality, polyferric sulfate accounts for 3% of total mixture quality, and balance is water.

Embodiment 3

[0038] The present embodiment provides a kind of fire extinguishing method, comprises the following steps:

[0039] Sodium bicarbonate and 15% water were uniformly mixed to obtain a second mixture.

[0040] Mix the water glass with the polyaluminum chloride and the remaining water evenly to obtain the first mixture.

[0041] Mix the first mix at 3m 3 / s flow rate and the second mixture at 2.5m 3 / s flow hedging and mixing to obtain the total mixture, and then inject the total mixture to the surface of the coal mine, various gaps and ignition points.

[0042] Wherein, water glass accounts for 15% of total mixture quality, sodium bicarbonate accounts for 4% of total mixture quality, polyaluminum chloride accounts for 2.5% of total mixture quality, and balance is water.

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Abstract

The invention relates to the field of fire fighting, in particular to a fire fighting method. The fire fighting method comprises the following steps that a setting accelerator is mixed with 5-15% of ablender by mass, then mixed with a first mixture of water glass compounds, a clarifying agent and the rest of the blender, and then injected. The fire fighting method is high in maneuverability, flexible, practical, and capable of treating point-shaped and small-space treating coal self-combustion disasters which are not suitable for being put out by water and achieving safe, rapid and effectivefire fighting effects.

Description

technical field [0001] The invention relates to the field of fire extinguishing, in particular to a fire extinguishing method. Background technique [0002] As the scope of goafs in coal mines continues to increase, mine pressure is becoming more and more obvious. Coal pillars and airtight pressure in goafs are easy to form cracks, and air leakage in goafs increases, which is very easy to cause spontaneous combustion of floating coal in goafs. Once a fire breaks out underground, the method of directly using water to extinguish the fire is usually adopted, but when water passes through hot coal above 600°C, water gas will be generated, which can easily induce water gas explosion and cause secondary accidents; while the existing yellow mud grouting system inactivation system meets the requirements No small-scale, sudden fires, and poor mobility; Nitrogen injection for fire extinguishing Because nitrogen is easy to leak, it is often necessary to close the fire area first and re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F5/08A62C3/00
CPCE21F5/08A62C3/00
Inventor 王利军曾海利赵洪伟朱建伟赵振波贺帅
Owner INNER MONGOLIA YITAI COAL
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