Inhibition method and technology for coal spontaneous combustion through biological method

A coal spontaneous combustion and biological method technology, applied in earth drilling, safety devices, mining equipment, etc., can solve the problems of lack of active restoration and protection of blank areas, poor technical implementation initiative, etc., to achieve excellent environmental adaptability and strong self-repair The effect of ability and strong stability

Inactive Publication Date: 2017-07-07
肖栋
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AI Technical Summary

Problems solved by technology

Traditional technical methods are to use physical or chemical methods, use cooling or physical isolation to achieve coal spontaneous combust

Method used

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  • Inhibition method and technology for coal spontaneous combustion through biological method
  • Inhibition method and technology for coal spontaneous combustion through biological method

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Experimental program
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Effect test

Embodiment Construction

[0026] Suppression of coal seam coal spontaneous combustion:

[0027] 1. Estimate the volume of coal that needs to be suppressed from spontaneous combustion;

[0028] 2. According to the calculation of adding 10mL of original bacterial liquid per 1m³ of coal body, measure the bacterial liquid;

[0029] 3. The laboratory is diluted according to the ratio of 1:10000, and the concentration of the diluted bacterial solution is not less than 10 4 a / mL;

[0030] 4. Refer to the laboratory dilution ratio, set the ratio dilution pump, and ensure that the concentration of the diluted bacterial solution is not less than 10 4 a / mL;

[0031] 5. The bacteria are directly injected into the coal seam with the coal seam water injection;

[0032] 6. Microorganisms will automatically cover the biofilm on the surface of coal fissures, isolate the contact between ambient oxygen and coal, and realize the function of inhibiting coal spontaneous combustion.

[0033] Anti-spontaneous combustion ...

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Abstract

Coal is a material easy to combust spontaneously, the coal makes contact with oxygen in air for a long term, physical and chemical effects occur, and the spontaneous combustion phenomenon occurs. Coal spontaneous combustion is an important aspect in mine fire control management. A biological engineering method is utilized to establish a biological film on the coal surface, and the biological film has four characteristics that (1) by using the biological oxygen consumption characteristic, the contact between oxygen molecules and the coal is actively blocked, and the basic condition of coal spontaneous combustion is blocked; (2) the oxygen consumption rate and oxygen isolation ability of microorganisms are increased with the increase of the ambient temperature; (3) the microorganisms can actively produce a certain amount of carbon dioxide and dilute the oxygen content in the ambient air, and the higher the temperature, the stronger the effect; and (4) the microorganisms have the characteristic of autonomous migration, and when a new fissure surface appears in a coal body of a control zone, the biological film can complete blank area coverage independently. Through the method, the coal disaster management level is improved, the cost of prevention and treatment management of coal spontaneous combustion is reduced, and the promotion effect on improving the mine technology level is achieved.

Description

technical field [0001] The invention relates to a biological coal spontaneous combustion suppression method and technology, belonging to the fields of coal bioengineering and coal safety engineering. Background technique [0002] Coal is a substance that is prone to spontaneous combustion. It is in contact with oxygen in the air for a long time, and physical and chemical reactions occur to cause spontaneous combustion. It is an important aspect in mine fire control management. The traditional control of coal spontaneous combustion is to control the spontaneous combustion of coal by injecting water into the coal seam, using physical methods to isolate the coal body from the air, or nitrogen dilution. Traditional technical methods use physical or chemical methods to control coal spontaneous combustion by cooling or physical isolation. The initiative of technical implementation is poor, and they do not have the ability to actively repair and protect blank areas. The new paten...

Claims

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Application Information

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IPC IPC(8): E21F5/00
CPCE21F5/00
Inventor 肖栋王恩元吴俊勇
Owner 肖栋
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