澳大利亚昆士兰州芒特艾萨(Mt Isa)矿对M61竖井地表的一项技术革新作了改进,用于地下矿,使该铜矿成本明显降低,而劳动生产率大大提高。设计了一种垂直风机安装座板,可以在天井顶部安装一台垂直风机,时间只要过去的四分之一,而且费用减少,因为这种座板可以拆除,反复使用多次。劳动生产率也显著提高。铜矿的通风协调人员T.尼克松认为,这项革新很重要,因为节省安装时间并能提高地下采区通风回路的效率。他说:“新系统可使一个支护小组在一个班内安好座板和风机,过去可能要4个班。”“它还能减少构筑 An improvement to the surface of the M61 shaft at a Mt Isa mine in Queensland, Australia, has been used in underground mines to significantly reduce the cost of the copper mine and greatly increase labor productivity. A vertical fan mount was designed to install a vertical fan on the top of the patio for a quarter of the time and at a reduced cost because it can be removed and reused several times. Labor productivity also significantly increased. Copper mine ventilation coordinator T. Nixon believes that this innovation is important because it saves installation time and increases the efficiency of ventilation circuits in underground mining areas. He said: “The new system will allow a support group to set up the deck and fan in a single class, which may take up to four classes in the past.” "It also reduces build-up