The sea is full of water, how is the submarine tunnel built? What should I do if there is a water leak?

China's bridge-building technology ranks first in the world. Take the Hong Kong-Zhuhai-Macao Bridge as an example. How many countries can do such a huge project? But how does the tunnel under the sea of ​​a bridge like this do not leak?

First of all, let me introduce the Hong Kong-Zhuhai-Macao Bridge. It is a tunnel located in Lingdingyang, Guangdong Province. Does it remind you of Wen Tianxiang, a patriotic poet?

This world-famous bridge is the pride of China, but you must know that it is built under 40 meters of sea water, and part of the tunnel under the sea is 6.7 kilometers long.

It really takes a lot of powerful technology to be watertight! This shows the level of development in China! Scientists are very smart, considering that the foundation of the bridge is a thick soft soil foundation,

Since the submarine tunnel is composed of more than 30 sections of round pipes weighing more than ten tons, it needs a strong bearing capacity, so they spread small stones of two to three meters on the deep seabed.

and tamp them flat. In this way, the foundation of the bridge will not be so soft, there will be enough strength to carry the bridge, and the settlement value required by the immersed tube will be greatly reduced.

In fact, another way of saying it is to add a thick layer of stone blocks to the original foundation. This method of moving flowers and trees is really used! Since the foundation will settle due to time problems,

Clever engineers built it with a new structural solution, called a semi-rigid structure, where reinforcements were made on the connecting steel cables between the two round tubes to prevent deformation.

In addition to these major directions, there are also some small details. After hundreds of experiments, scientists finally determined the plan and made a suitable ratio of concrete for the bridge.

The purpose of this is to enhance the strength of the concrete, so as to ensure that there will be no cracks in the tunnel under the sea, even if there is sea water with a depth of 40 meters,

Not a single drop of water will leak. In the past when other countries built bridges, the submarine tunnels did not leak water.

And China has built a tunnel under the bridge that can "tear water leaks", which really makes the Chinese people's prestige! Can't help but be proud!