上海铁路局自1979年至1983年在沪宁线上铺设的113km轨枕板,初步体现了长钢轨下铺设轨枕板线路的优越性。但由于在铺设时,有些路基和道床病害整治不彻底,并大量补充了石灰质石碴;加以板缝未密封,雨水夹带脏物流入道床,污染了道床;特别是板头石碴脏污板结,阻碍排水,以致铺设后不到三年,有些 The 113km sleeper laid by Shanghai Railway Bureau on Shanghai-Nanjing line from 1979 to 1983 initially showed the superiority of laying sleeper line under the long rail. However, some roadbed and ballast beds were not completely rehabilitated at the time of laying, and limestone ballastes were replenished in a large amount. Unfiltered slabs and rainwater entrained dirty material flowed into the bed and contaminated the bed. In particular, Hinder drainage, resulting in less than three years after laying, some