TB/T 2658.20-2004 in English

本部分规定了大型养路机械(以下简称“大机，’)道床换碴的作业条件、作业组织、作业程序及要求和施工安全等方面的内容。
本部分适用于采用大机进行的道床换碴作业，包括处理翻浆冒泥道床。大型清筛机附挂风动卸碴车进行道床清筛作业可参照执行。
本部分适用于路段设计行车速度为160k m/h及以下的线路。

Scope

This part stipulates the operating conditions, operation organization, operation procedures and requirements for ballast replacement of track beds of large-scale track maintenance machinery (hereinafter referred to as "big machines"), as well as construction safety and other aspects. This section applies to the ballast replacement operation of the track bed using large machines, including the treatment of slurry and muddy track beds. The large screen cleaning machine can be attached with a pneumatic ballast unloading truck to perform track bed cleaning operations as a reference. This section applies to lines with a design speed of 160km/h and below.