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Low-oxygen safe mining process

A safety and oxygen content technology, applied in safety devices, ground mining, mining equipment, etc., can solve the problems of incomplete and effective monitoring, unpredictable, gas leakage, etc., and achieve the effect of solving the problems of coal dust explosion and mine fire combustion

Inactive Publication Date: 2008-04-16
徐弘炯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, gas may leak anytime and anywhere in the mine, which is an unpredictable variable and cannot be fully and effectively monitored.
The cost of safe production is high and safety cannot be guaranteed. Explosions occur from time to time, causing a lot of loss of life.

Method used

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Examples

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Embodiment Construction

[0008] The specific implementation method can seal the outlet and vent of the mine, and then inject nitrogen into the well or let the gas in the well leak out naturally to replace the air, so that the oxygen content in the well is lower than 15%, which is actually lower in order to ensure safety. 13% or less. All personnel who go into the well shall bring an oxygen supply device to work in the well.

[0009] In order to ensure the safety of the miners, an "oxygen-enriched lounge" is arranged in an appropriate place in the mine. The oxygen-enriched lounge is a sealed room with the same oxygen content as the normal standard value on the ground, and basic oxygen respirators are provided for backup. It is usually used for miners to eat, smoke and rest. When an accident occurs, it is used as a "safety island" for miners to avoid danger, obtain spare oxygen equipment, and use the "safety island" as a springboard to evacuate.

[0010] In addition, an oxygen respirator is placed ever...

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PUM

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Abstract

The invention discloses a mine safe production method starting from oxygen concentration in three factors of gas explosion. The oxygen content is controlled and kept lower than fifteen percent in the mine, therefore, that the gas explosion does not happen under any gas content conditions in mine is guaranteed. When the oxygen concentration is reduced, coal dust explosion and combustion accident can be avoided, too.

Description

Technical field [0001] The technology of the present invention is used in the mining of mines, especially coal mines, and relates to a mining operation method that reduces the oxygen content inside the mine to ensure safety. Background technique [0002] At present, coal mine safety explosion-proof technology starts from the gas itself, by monitoring the gas content and diluting the gas concentration by ventilating the mine, so that the gas concentration is lower than the explosive concentration to avoid explosions. [0003] However, gas may leak anytime and anywhere in the mine, which is an unpredictable variable and cannot be fully and effectively monitored. The cost of safe production is high and safety cannot be guaranteed, and explosions occur from time to time, causing a large amount of loss of life. [0004] A gas explosion does not happen as long as there is gas. There are three necessary conditions for a gas explosion in a coal mine—the gas concentration reaches th...

Claims

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Application Information

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IPC IPC(8): E21F5/00E21C41/16
Inventor 徐弘炯
Owner 徐弘炯