石太线是北京局管内晋煤外运的中路通道,是一条繁忙的运输干线,年运量已达70Mt,并且还有逐年增长的趋势。但是,石太线线路等级低,不足三级标准,设备陈旧老化,枕木道钉结构是四十年代水平,由于维修劳力和费用短缺,维修方法落后,造成线路设 Stone Tai-line is the Beijing Bureau Tube coal transport outside the middle of the channel, is a busy transport route, the annual volume has reached 70Mt, and there is a growing trend year by year. However, the stone too line line level is low, less than three standards, equipment aging, sleeper spike structure is the level of the forties, due to maintenance labor and cost shortages, maintenance methods behind, resulting in line set