Bismark锌矿是墨西哥新建最大地下矿之一,1992年投产。矿石品位:Zn8%,Pb0.5%,Cu 0.2%。由于水大量涌入地下矿,使开采复杂化。矿山岩石情况很好,基本不需支护,全部采用轮胎式设备。采用斜坡道和竖井开拓,斜坡道从地皮掘进,断面4m×3.5m,坡度13.5%,主要运输重型设备、人员和材料,兼作勘探和开拓进路之用。竖井是 The Bismark zinc mine is one of the largest underground mines in Mexico and was put into production in 1992. Ore grade: Zn8%, Pb0.5%, Cu 0.2%. Due to the influx of water into underground mines, mining is complicated. Mine rock conditions are very good, basically do not need support, all with tire-type equipment. The use of ramps and shafts for development, ramps excavated from the ground, section 4m × 3.5m, slope 13.5%, the main transport of heavy equipment, personnel and materials, also serves as exploration and pioneering approaches. Shaft is