1问题与分析沪宁线营业里程303km，总计线路延长1532．725km，全线工务设备固定资产总值15．67亿元。半个世纪以来，沪宁线的工务工作与我局其它干线一样，经历了三个阶段。第一阶段是以“头痛医头，脚痛医脚，完成任务不算帐，设备坏了再修”为基本特征的老养路法；第二阶段是参 1 Problems and Analysis The business mileage of the Shanghai-Nanjing Line is 303km, with a total extension of 1532.725km and total fixed assets of 1.567 billion yuan of public utilities. For half a century, the public works in Shanghai-Nanjing Line have gone through three stages like those in other branches of our bureau. The first stage is based on the old method of “keeping a head in the head, healing the feet, completing the task without accounting, and then repairing the equipment broken” as the basic characteristic;