If you really come to the railway to observe, you will find that the railway is higher than the side road, and there will be a lot of stones piled next to it. These stones are not for beauty. But played a role in drainage. The sleepers of the train track are under the pressure of the train for a long time, and the terrain will definitely be lower. Laying stones around sleepers and railways will allow rainwater to drain away along the stones and flow to the drainage ditch. Reduce the erosion of railways and sleepers.
Everything expands with heat and contracts with cold, including the railway and the ground. There are many gaps between the stones, which can allow the railway and sleepers to have enough space to expand when heated and contract when cooled. Moreover, the thermal insulation effect of stone is good, which reduces the temperature difference around the railway and sleepers and reduces the occurrence of thermal expansion and cold contraction. This is also a very good protection for the railway.
When the train passes through the track, there will be great pressure between the train wheels and the track. The train is very big, but the wheels are very narrow, which is enough to show how much pressure the train has when passing through the track. Through the stone, the pressure of some trains on the track and sleepers can be dispersed, and these pressures will be evenly distributed on the stone and then transmitted back to the ground through the stone. In this way, the wear of the track will be reduced. It is also conducive to the long-term use of the track.
Of course, the role of stone is far more than that, it can also reduce vibration. When the train passes by, stones can well disperse the vibration caused by the train shaking. This is also a very big role.
As a frequently used means of transportation, safety is the most important. The stone next to the railway is just one? Great hero? . Although they are only small stones, they play a very important role on the train. There must be some reason for people to invent something. Time-tested methods will be preserved and used forever.