改進礦井通風是改善井下勞動條件的基本環節。我局東北分局所屬華銅礦第二、第三大井,自去年十二月至今年四月已相繼實现了機械通風,在井下風流所能達到的工作面,放炮後只需15～30分鐘即可將炮烟全部排除。根據二大井的統計,全坑探礦掌子在未實行機械通風之前,每台打眼機每班平均只能打13个眼;四月份扇風機正式運轉后,每台打眼機每班平均已能打17個眼,而且炮烟中毒事故也已基本消滅。 Improving mine ventilation is the basic link to improve working conditions underground. The northeast branch of our bureau belongs to the second and third largest well of Hua Cu, since December of last year and April of this year, mechanical ventilation has been realized in succession. The face that can be reached by the downhole wind flow can only be 15 to 30 minutes Gun can be completely ruled out. According to the statistics of the two major wells, before the implementation of mechanical ventilation, the average pitting machine can only hit 13 eyes per class. After the fan fan is fully operated in April, each eye-opening machine has been able to play an average of 17 Eyes, but also the gunpowder poisoning has basically been eliminated.