Taking the Qin-Shen line for example,this article gives a description of the technological process of welding & storage of continuous rails in the base,bottom ballast installation,track-laying,field welding,stress release and fastening down of rails and precautions for the construction of one-time CWR track laying on monoblock concrete sleeper

The paper introduces a method of calculating the time limit for track laying and bridge erecting engineering project, in which several factors are quantized.

Research purposes: In cause of innovation of existing railway line, sometimes it needs to lay continuously welded rail in minor section, but it is difficult to do it with long-railed machinery, so the method of replacing and laying track with track panel was adopted previously.