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不断改进轨下基础,是加强线路、提高运行速度的重要措施之一。近年来,经过无产阶级文化大革命,广大工务职工组织了三结合小组,开展技术革新运动,试制成功了预应力钢筋混凝土轨枕板,并在一些铁路局进行了试铺。 上海铁路局线桥大修队,以自力更生的精神,充分发动群众,克服了种种困难,于1974年12月20日～28日,在沪杭线嘉善～七星桥间,_以较短的封锁时间,在清筛后未经夯实的道床上,成功地铺设了一公里长的轨枕板线路(改进后的65型轨枕板),并随铺设随加强养护,线路质量较好,从而进一步提供了在运输繁忙的正线上铺设轨枕板线路的经验。
Continuous improvement of the under-track basis is one of the important measures to strengthen the line and speed up the operation. In recent years, after the Great Proletarian Cultural Revolution, a large number of workers and staff organized a three-in-a-small group to carry out a technological innovation campaign. Trial production of prestressed reinforced concrete sleepers was carried out and trials were conducted in some railway administrations. Shanghai Railway Bureau line bridge overhaul team, in a spirit of self-reliance, fully mobilize the masses and overcome all kinds of difficulties, in December 20, 1974 to 28, in the Shanghai-Hangzhou line Jiashan ~ Seven Star Bridge, _ with a shorter blockade time , Successfully installed a one kilometer long sleeper line (improved 65-type sleeper line) on uncompacted road beds after cleaning and provided further improvements in line quality with better maintenance as the laying progressed Transporting the busy frontline with sleeper line experience.