Why does the Beijing Shanghai line give priority to the way of replacing roads with bridges?

The main purpose of the Beijing-Shanghai high-speed railway to give priority to the use of "bridges instead of roads" is to avoid fertile land and save land.

The construction of the Beijing-Shanghai high-speed railway avoids fertile land and allows fertile soil, and the principle of saving intensive land to the greatest extent is not to use, and the poor land is not used, and the non-arable land is not used, and the non-arable land is used to use non-arable land, and the design has been revised twice, and the bridge and culvert settings of the whole line have been optimized, and the length of the bridge has increased significantly from the initial more than 400 kilometers to the final design of 1024 kilometers, accounting for more than 80 of the length of the whole line. In general, the average width of a bridge is 18 meters, while the average width of a conventional railway subgrade is about 45 meters. There are a large number of agricultural cultivation areas in the flat areas along the Beijing-Shanghai high-speed railway, and if the ordinary railway is designed to be dominated by roadbeds, the cultivated land area will be very large.

The "bridge instead of road" scheme is adopted, the project cost is high, the process is difficult, and the equipment requirements are high, but farmland can be avoided as much as possible. It is estimated that this measure alone can save more than 30,000 acres of land.

Avoid fertile land and save land. The construction of the Beijing-Shanghai high-speed railway avoids fertile land and fertile soil, and the construction of the Beijing-Shanghai high-speed railway avoids fertile land and allows fertile soil to save intensive land to the greatest extent.

The construction of the Beijing-Shanghai high-speed railway avoids fertile land and allows fertile soil, with the principle of saving intensive land to the greatest extent, and the land that can be used is not used, the land that can be used is not good, and the non-cultivated land can be used without arable land, and the design has been revised twice, and the bridges and culverts of the whole line have been optimized, and the land is reduced by 30,000 mu.

It is not only convenient for the people and vehicles along the line, but also ensures the safety of high-speed train operation. The whole line gives priority to the use of bridges instead of roads to save very valuable land resources to the greatest extent.

1. Safety: Reduce subgrade settlement by replacing roads with bridges.

2 Noise reduction: One track connects thousands of miles, no longer "clang".

3. Reduce land occupation.

4. Reduce the cutting of towns along the line.

5. Ensure full enclosure and safety.

6. Reduce environmental damage and protect the migration routes of wild animals from being cut off.

Avoid fertile land and save land. The construction of the Beijing-Shanghai high-speed railway avoids fertile land and allows fertile soil, and the principle of saving intensive land use to the greatest extent is the principle.

The reason for the Beijing-Shanghai high-speed railway to replace the road with bridges is to avoid fertile land and let fertile soil save intensive land to the greatest extent.

Prevent subgrade settlement, reduce land use, and save valuable land resources.

Analysis: Due to the complex terrain along the Zhengxi high-speed railway, the method of "replacing the road with bridges" is adopted; The Beijing-Shanghai high-speed railway passes through areas with large populations and small per capita cultivated land area in China, and the method of "replacing roads with bridges" is mainly to occupy less cultivated land along the line. Answer: d

In the Beijing-Shanghai Railway, "leading the way with bridges" has been placed.

The formula can minimize the impact of A on residents along the line, and at the same time can save land; In addition, the train on the passenger dedicated line is very fast, which requires the line to be as straight as possible, so that the tunnels and bridges can be "straight and straight" also occupy a larger proportion according to the title

Therefore, b