Recently, the ballastless track of the 4th bid section of the Hanbanan Railway, which was constructed by the second company of the China Railway 18th Bureau Group, has been completed. The Nanchong-Bazhong section of the Hanbanan Railway has a total length of 148 kilometers. Located in the territory from Yilong County, Nanchong City to Bazhong City, the total length of the line is 27.893 kilometers, and the bridge-tunnel ratio in the bidding section reaches 66.5%. The construction content mainly includes the construction task of about 13.168 kilometers of double-lane ballastless track, and the construction site covers 3 tunnels, 2 subgrades, and 1 bridge.

"Ballastless track construction is the last important process before railway track laying. The construction precision is high and the process is complex, requiring fine construction. During construction, strictly control the steel bar binding work, sleeper installation, fine adjustment work, concrete pouring and maintenance construction, etc. Multiple processes. In the construction of the ballastless track, in order to ensure the smooth completion of the pouring of the ballastless track, facing the challenges of a large amount of work and high precision requirements, the party branch of the project department inserted the party flag on the palm surface and the ballastless track On the bed, let the party members stand on the front line of the operation, solve the on-site technology, machinery, materials, personnel and other matters in time, and speed up the process connection.

Aiming at problems such as narrow project material transportation channels, many crossing construction work surfaces, large production tasks of the mixing station, and tight supply of raw materials, the project department carefully calculated the construction time of each process and the length of material transportation distance, continuously optimized the construction organization, and paid close attention to the process. Convergence and strengthening of tooling allocation, implementation of 2 shifts, 24-hour uninterrupted construction, to ensure the rapid advancement of the working face. At the same time, during the construction process, attention was paid to the fine adjustment of the track. The survey team went deep into the construction site and repeatedly checked the measurement technology and measurement results to ensure that the data were within the acceptance criteria before the concrete pouring, surface closing and maintenance of the ballast bed could be carried out, which greatly improved Improve the construction progress and quality.

After the Hanbanan high-speed railway project is completed and put into use, it will not only end the history of the lack of high-speed railways in the old revolutionary areas of Bazhong and Yilong, but also further promote the development of the Southwest Economic Zone, which is of great significance to the construction of new passenger transport channels in the Southwest. Editor /Xie Li