Pingdingshan Group 8th Mine Ventilation And Fire-fighting Technology Research In 14120 Working Face

During my internship in goaf and, through 14100 and 14120 mining face fire-fighting, contact to the grouting, nitrogen injection, pressure ventilation fire prevention measures, such as has also participated in the three and has three expand mining ventilation system adjustment. Papers to the field practice based on the data collected, through various fire extinguishing measures are analyzed, and the principle of field has in effect, summarizes comparing the advantages and disadvantages of various fire extinguishing measures, namely, while successfully controlled gained invaluable experience for future work.During the grouting is always gateways mined-out area in the wind alley of buried pipes, the main principle is to use cement slurry, the coal goaf float isolation oxygen has wrapped slurry function, and evaporation, can play in reducing the effect of mined-out area oxygen content, and the higher the temperature is, the greater the steam saturation concentration is further reduced the mined-out area, thus achieved the oxygen content in the fire prevention purposes. But because spot grouting is often run down the low-lying slurry, where a small part only cover float coal. But the grouting pipe closed mined-out area often reach stopped near in line from airtight, resulting in slurry around and lane help fracture outflow, cannot achieve ideal effect.Eight ore now mainly in mining face mining next Angle during cross buried tube to oxidation with nitrogen injection, spontaneous combustion principle of fire prevention and extinction by nitrogen injection mainly on the one hand, is played the role of isolation nitrogen oxygen, on the other hand is to enlarge the goaf pressure, reduce air leakage. But the length of the field because of pipeline reach oxidation spontaneous combustion with general, thus making the leakage of nitrogen with tropical airflow loss scattered, short of the ideal effect.Pressure ventilation is the cheapest and most convenient fire extinguishing method, through the observation, pressure in fire prevention although eliminated inside short time for oxygen mined-out area, but because of 8th mine ventilation system complex, and through the field measurements in the morning and noon, down hole differential pressure can have 50 palmer. So, all pressure fire extinguishing exist instability. Has three and has three expand mining ventilation system adjustment is mainly through roadway before - 430 do resistance measurement and ventilation network settlement work. After adjustment for piercing the ventilation system provide roughly theoretic basis.