High-altitude mine driving face oxygen-enrichment device and method

The invention discloses a high-altitude mine driving face oxygen-enrichment device and method. The device comprises a regional oxygen supply mechanism which is arranged at the top of a tunnel and is matched with a driving face, an oxygen supply nozzle mechanism used for body wearing and an air-supply pipeline mechanism. The method comprises the following steps: 1, mounting of the regional oxygen supply mechanism; 2, connection of the oxygen supply nozzle mechanism; 3, start of the regional oxygen supply mechanism; 4, start of the oxygen supply nozzle mechanism; and 5, regional oxygen enrichment of a full-tunnel driving face. According to the high-altitude mine driving face oxygen-enrichment device, the local area close to the mouth and nose of an operator is subjected to pressure boostingand oxygen enrichment through the oxygen supply nozzle mechanism, an annular air curtain and local oxygen enrichment in the area enclosed by an annular air curtain can be formed through an oxygen enrichment disc, oxygen is co