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近年来,南非联邦煤炭出口运量有很大增长,预计到1986年底年运量将达到44Mt。为了适应运量增长的需要,南非联邦运输部门已决定拨款6.53亿美元,改造布拉克希尔—理查兹湾长达580km的重载运煤线。这条建于1976年的线路,轨距为1065mm,限制坡度15‰,最小曲线半径500m。在钢筋混凝土轨枕上铺设了由HCOB号钢制造的57kg/m钢轨。线路投入运营后可以开行由76辆轴重18.5t的货车编成(总重约5750t)的直达列车,保证每年能运送21Mt出口煤炭。1979年提出改造这条线路,要求能够实现开行由184辆轴重为
In recent years, the coal export volume of the South African Federation has greatly increased. It is estimated that by the end of 1986, the annual transportation volume will reach 44 Mt. In order to meet the needs of traffic growth, the South African federal transport department has decided to allocate 653 million U.S. dollars to transform the heavy coal conveyor line of Barker-Richards Bay up to 580 km in length. This line, built in 1976, has a gauge of 1065mm, a limit of 15 ‰, and a minimum radius of 500m. A 57 kg / m rail made of HCOB steel is laid on a reinforced concrete sleeper. After the line is put into operation, a direct train of 76 trucks with a total axle weight of 18.5t (total weight about 5750t) can be launched to ensure that 21mt of exported coal can be transported each year. In 1979 proposed to transform this line, called for to be able to achieve opening by 184 axle weight