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기찻길에 왜 자갈이 있을까?

by mubnoos 2021. 7. 23.

 

1) 충격을 흡수해 땅이 흔들리는 걸 막아준다.

2) 비가 올 때, 철로가 잠기지 않다록 한다.

3) 잡초가 자라는 걸 막아준다

 

 

 

https://en.wikipedia.org/wiki/Track_ballast

 

Track ballast - Wikipedia

Good quality track ballast is made of crushed stone. The sharp edges help the particles interlock with each other. Track ballast (close up) between railway sleepers and under railway track Track ballast forms the trackbed upon which railroad ties (sleepers

en.wikipedia.org

https://www.youtube.com/watch?v=xKPxvTRpYHw