在日本27,000余公里的运营线中,有58％左右是容易发生翻浆冒泥的不良路基。为了研究整治翻浆冒泥的合理措施,日本国营铁路本社成立了“路基研究会”。1975年9月对三级线以上(不包括新干线)的17,435公里线路进行了调查,其中有71,699处约730延公里线路有翻浆冒泥,相当于调查线路的4.2％。 About 58% of Japan’s 27,000-kilometer operating lines are poor subgrade prone to mud and mud. In order to study the reasonable measures for remediation of mud and mud, the Japan State-owned Railway Corporation established a “Roadbed Research Society.” In September 1975, a survey of 17,435 kilometers of lines above and beyond level 3 (excluding the Shinkansen) was conducted. Among them, 71,699 of the approximately 730 kilometers of extension lines had mud and mud, equivalent to 4.2% of the survey line.