随着铁路提速范围的扩大及列车高速、快速、重载方向的发展,黄土地区路基暴露出来的问题越来越突出,既有铁路路基加固及病害防治已成为提速改造工程的关键项目。本文分析了黄土地区既有铁路路基基床病害的成因和特性,提出了黄土地区既有铁路基床病害整治加固的基本思路和技术措施,对我国目前大规模进行的既有线路提速路基改造具有一定的指导意义。 With the expansion of railway speed range and the development of high-speed, high-speed and heavy-load trains, the roadbed exposed in the loess area becomes more and more prominent. The existing railway subgrade reinforcement and disease prevention and control have become the key projects of speed-up renovation project. This paper analyzes the causes and characteristics of subgrade bed disease of existing railroads in the loess area, puts forward the basic ideas and technical measures for treatment and rehabilitation of the existing railway subgrade bed in the loess area, A certain guiding significance.