经过对山东淄博矿务局济北矿区唐口矿风井建井期间及平巷开拓所需的提升机进行技术经济指标的比较,确定最佳方案。

• the comparison that the lifter that the drift reclamation needed carried on the technology economy quota and northern mining area Tang Kaukauna s ventilating shaft is crossed a river in Shandong Zibo mine affair bureau during building the well was compared, and defined the preferred embodiment.