Tìm kiếm
Track ballast
01
đá dăm đường sắt, cát sỏi đường ray
the layer of crushed stones or gravel placed under and around railway tracks to keep them in place and provide drainage
What is "track ballast"?
Track ballast is the layer of crushed stone or gravel placed beneath and around railway tracks. It helps to keep the tracks stable, ensuring they remain in position and do not shift under the weight of trains. Ballast also allows water to drain away from the track, preventing flooding and damage. The stones are arranged to distribute the weight of the trains evenly, which helps maintain the track's alignment and supports safe and smooth train movements. Ballast is essential for the durability and proper functioning of railway tracks.
Example
The workers spread new track ballast along the railway line to make the tracks more stable.
Without track ballast, the train tracks would shift and become uneven over time.
Track ballast helps to prevent the rails from moving when trains pass over them.
Từ Gần
