METHOD FOR VENTING DEAD END CHAMBERS DURING BORING-AUGER COAL EXTRACTION AND DEVICE REALIZING SAID METHOD Russian patent published in 2004 - IPC

FIELD: mining industry. SUBSTANCE: method includes directing continuous fresh air flow into well pit- face during maintenance operations with pipeline sections by means of turn-by- turn connection of section located in front of aeration pipeline section being lengthened or shortened to air supply. For realizing said method a special device is used, which has a port on each aeration pipeline section, and within each section a valve is placed in form of elastic pipe element, which is fixed by its base and one end to inner surface of pipeline section and which has free second end and a portion of surface, said portion being located in front of the port in the section of aeration pipeline. EFFECT: increased aeration effectiveness, increased safety of coal extracting operations due to constant venting of well pit-face. 2 cl, 3 dwg