Can you believe it? Although China is a big railway country, the disposal of waste rails is still simple and crude, that is".Bury in situThen why don't the scrapped railroad tracks **?
In the process of railway operation, affected by factors such as train load, natural environment and construction, tracks, turnouts, bridges and other facilities will appear to a certain degree of wear and aging.
If it is not repaired in time, there will be safety hazards and even serious accidents on the railway. Railroad workers are a very hard job.
While others are falling asleep, their work is just beginning. The materials required to build rails are very complex, and the load-bearing pressures vary depending on the type of rail.
European rails can bear weight per meter40-60 kg, and China's rails are 50-75 kg, if it is a freight rail, the bearing capacity is stronger.
Generally, in order to prolong the service life of the rail, we will lay "ballast" under the rail, its main function is to make the rail can be kept stable, greatly reduce the probability of accidents, and prolong the service life of the rail.
In the cold winter, "ballast" can also prevent the rails from freezing, to ensure that the train in the cold weather, can still run safely, so to speak, ballast is the "unsung hero" of the railway transportation system, but no matter how to maintain, anything has a service life, waste rails, why not use it?
China scraps millions of tons of scrap steel rails every year, and how are these rails disposed of? Why can't it be buried on the spot?
The service life of the rail is affected by the material of the rail, the speed of the train, the weight, the climate, the terrain, etc., generally speaking, the rail life of an ordinary railway is about20-30 years, the rail life of high-speed railway is about10-15 years.
If the guide rail is found to have cracks, deformation, wear and other problems, it should be replaced in time, according to statistics, China replaces scrap rails every year10 million tons.
Moreover, the use of rails is very difficult, and the railway rails are made of special steel, which has the characteristics of high strength, high toughness, high wear resistance, etc., and is not easy to rust and deform.
These characteristics not only make the rails durable, but also difficult to use, requiring superb craftsmanship and technical treatment.
The dismantling of the rails is not a simple job, which requires a lot of manpower, material resources, and professional equipment.
This produces large amounts of carbon dioxide and other harmful gases, and in addition, the rails also require chemical treatment to remove grease and contaminants from the surface of the rails.
Moreover, the reused steel rails cannot be restored to their original state, and can only be used in some undemanding occasions, in contrast, it is more realistic to "bury in situ".
Why does our country bury "rails" on the spot? Because this is the easiest and most effective way to dispose of it, scrap rails can be dug in a pit in situ, then the rails can be placed in the pit and the soil can be filled back.
This method not only saves the transportation and handling costs required for the rails, but also saves time and labor. The principle of this method is to take advantage of the weight and stability of scrap rails.
It is buried on both sides or under the railway as a support and reinforcement of the railway, increasing the bearing capacity and stability of the railway, and at the same time preventing the deformation of the railway.
This method not only saves transportation and processing costs, but also makes full use of the value of scrap rails, guarantees the safety and smooth flow of the railway, and can also save time and labor.
Of course, it is not a simple matter to bury waste railroad tracks on site, you need to choose the right site to ensure that the burial depth and method meet the relevant standards to prevent contamination of groundwater and soil!
Moreover, burying the waste railroad tracks on the spot is not a long-term solution, which is a waste for our country, which is increasingly short of land resources.
In short, the way railway tracks are handled is not only related to the resource management and environmental protection of the railway department, but also affects the attention and thinking of the society!
Scientific rambling