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1)澳大利亚。澳大利亚西北部的铁矿石专运线是世界上运营条件最苛刻的线路之一。通常轴重为37.5 t,年运量超过9 000万t。必和必拓(BHP)公司的铁矿石专运线于1969年开始运营,线路的初始设计轴重为30 t,年运量800万t。然而,10年后年运量就超过4 000万t。2001年6月21日,该公司创纪录地开行了一列净载重82 266 t,总重99 734 t的重载列车。2010年开行的铁矿石重载列车每列总重3万~4万t,黑德兰港至纽曼矿426 km的线路年运量超过1.09亿t。2)加拿大。自20世纪60年代晚期,加拿大太平
1) Australia. The iron ore special transport line in northwestern Australia is one of the most demanding routes in the world. The typical axle load is 37.5 t and the annual capacity exceeds 90 million t. BHP Billiton (BHP) iron ore special operations began operations in 1969, the initial design of the line shaft weight of 30 t, the annual capacity of 8 million t. However, the annual traffic volume will exceed 40 million tons in 10 years. On June 21, 2001, the company opened a record high-speed heavy-haul train with a net weight of 82 266 tons and a total weight of 99,734 tons. The iron ore heavy-duty trains opened in 2010 each have a total weight of 30,000 to 40,000 t and the annual throughput of 426 km of the Port Hedland-Newman mine exceeds 109 million t. 2) Canada. Since the late 1960s, Canada Pacific