行车密度提高,养路时间紧缩,轨下路基原有的病害势必更要加剧。为了充分利用时间,特别是列车间隙,美国铁路试验路基调查整治日夜作业法,根据“铁路轨道与建筑”(1985年4月)原文,编译供参考。曾经翻浆冒泥的轨道,需要勤加养护或进行整治,但是初步表面调查,并不一定能发现轨道变形,或许轨枕匣和道床肩部也看不到泥痕。进一步调查表明大多数严重路基病害,表 Increased traffic density, maintenance time tightening, the original road subgrade disease is bound to intensify. In order to make full use of the time, especially the train gap, the United States Railway Test Subgrade Survey and rectification day and night operating law, based on the original “Railway Track and Architecture” (April 1985), compiled for reference. Once the mud orbit, you need to diligently maintain or remediation, but the preliminary surface survey, and may not be able to find the track deformation, or bed rail and rail bed shoulder can not see the mud. Further investigation showed that most of the serious roadbed diseases, tables