Experimental device and method for measuring roadway ventilation thermal resistance during mine fire

Abstract

The invention discloses an experimental device and an experimental method for measuring roadway ventilation thermal resistance in a mine fire period. The experimental device comprises a ventilator, afirst steel pipe, a combustion furnace, an electric heating pipe, a holding furnace, an inlet wind speed sensor, an inlet pressure sensor, an inlet temperature and humidity sensor, a second steel pipe, an outlet wind speed sensor, an outlet temperature and humidity sensor, an outlet pressure sensor, a pressure acquisition module, a temperature and humidity acquisition module, a wind speed acquisition module, a data storage module and a temperature rise control module. The experimental method for measuring roadway ventilation thermal resistance in the mine fire period comprises the steps of: step 1, establishing the experimental device; step 2, checking whether the connection of the experimental device is normal, and checking sealing performance; step 3, igniting combustibles, and storing data; step 4, heating by using an electric heating pipe, and recording data; step 5, arranging experimental data; step 6, and drawing a curve. The experimental device and the experimental method are ofgreat significance to formulating underground disaster prevention measures for mines and selecting ventilation decisions and disaster avoidance routes in catastrophe periods.

Description

technical field [0001] The invention relates to the technical field of mine fire prevention and control, in particular to an experimental device and an experimental method for measuring roadway ventilation thermal resistance during a mine fire period. Background technique [0002] Mine fire is one of the main natural disasters in coal mining production. Underground fires will destroy coal resources and equipment, because the underground air supply is limited, combustibles are difficult to burn completely, and a large amount of high-temperature smoke and harmful gases are generated, threatening the lives of workers, and even causing mine gas and coal dust explosions to cause more damage. Great harm. [0003] When a fire occurs underground, the high-temperature smoke generated may damage the original ventilation system of the mine, cause air flow disturbance, and bring difficulties to ventilation decision-making during the fire period. One of the main problems in ventilation...

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Problems solved by technology

[0004] At present, the experiment on ventilation thermal resistance of mine roadway does not distinguish between mixed smoke hot air flow and pure hot air flow, and cannot continuously collect relevant basic parameters such as temperature, humidity, pressure, and wind speed.

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