随着国家经济建设的发展,自一九八四年,我段陆续接收了新建的双线区间,正线延长为45.675~(k(?)),缓和了部分区间运能紧张的矛盾。但是,在新开通的4.5个区间路基普遍存在着质量不高的问题,不能按规定的速度运行,有些问题甚至是很严重的,给养护维修部门留下了难以克服的后患。 With the development of the country’s economy, a new double-line interval was gradually accepted by me since 1984, extending the positive line to 45.675 ~ (k (?)), Easing the tension between some sectors. However, in the newly opened 4.5 sections, subgrade quality is generally not high enough to run at the required speed and some problems are even very serious. This has left insurmountable problems for maintenance and repair departments.