Research on Ventilation Safety Guarantee Technology of Ultra-Long-Distance Digging Roadway
In order to ensure the smooth operation of the ventilation system of ultra-long-distance roadway tunnelling,taking the ventilation of the special transport roadway tunnelling of the support in the 31 mining area as an example,through calculating the air volume of the working face and taking into account the leakage of the wind pipe during the long-distance ventilation,we comprehensively selected the high-power local fans,implemented the frequency conversion ventilation and the flexible wind pipe will be the obstruction measures,and formulated the safety measures for the long-distance ventilation.Practice shows that:31 mining area stent special transport lane digging face ventilation is stable,the air supply is about 592 m3/min,the wind speed is about 0.33 m/s,the air volume and wind speed are always within the reasonable range,which fully guarantees the good working environment of the working face.
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