Operation standard for cleaning ballast sleeper

Operation standard for cleaning ballast sleeper

Line excavation depth: the center of single track line is generally excavated to 50 ~ 100mm below the sleeper, the rail pillow is excavated to 150 ~ 200mm below the sleeper, and the outside of the rail pillow is excavated to the subgrade surface; The inner side of the double track line is excavated to 50mm below the sleeper, the line center is excavated to 100mm below the sleeper, the outer rail pillow is excavated to 150 ~ 200mm below the sleeper, and the outer side of the rail pillow is excavated along the slope to the subgrade surface.

Turnout excavation depth: the sleeper box is generally excavated to 100mm below the sleeper, the outer strand rail is excavated to 150mm below the sleeper, and the sleeper end is excavated to 200mm below the sleeper bottom.

If conditions permit, a double-sided drainage slope must be formed.

The top width of track bed and slope gradient shall comply with Article 3.2.2 of railway line repair rules (TY [2006] No. 146) and article 3.1.3 of maintenance rules for 200 ~ 250km / h line bridge equipment of existing lines.

The side slope ballast shall be clean, the aperture of the sieve used for cleaning shall not be greater than 15mm, and the sieve margin shall not exceed 5% by volume.

In the cutting section, the sieve residue shall not be thrown on the cutting slope.