Come to the construction section.

It happens to be a section of road located halfway up the mountain. On one side is a steep mountain towering into the clouds and on the other side is an alluvial valley dozens of meters deep.

This terrain is basically a common topography around the Yunnan-Guizhou Plateau, Qinghai-Tibet Plateau, Hengduan Mountains, and Shu Provincial Basin.

Even if a road is built in many areas, it will face the threat of landslides and mudslides. If it is a frequent earthquake in the western Shu area, the difficulty and maintenance cost of building a road are very high.

After Huang Xiuyuan and Academician Li Fen got off the car, the head of the China Construction Team trotted over: "Mr. Huang, Academician Li, welcome to come and guide."

"I'll just come over and take a look." Huang Xiu said as he walked away.

Several people stood on the edge of the road. At the construction site in front, part of the mountain was blasted, and more than a dozen excavators were excavating the earthwork and gravel, or leveling the ground.

The advantage of integrated super highways is that the terrain requirements on the roadbed and both sides of the road are relatively low, and only the ground needs to be compacted and there is enough area to lay the road pipes.

Even some canyons and river valleys, as long as the width does not exceed 200 meters, the road pipes do not need to be built bridges and piers, and they can be directly spread across. Taking advantage of the integrated characteristics of super highways, we ensure that the road will not be deformed significantly.

Even large-span valleys and river valleys can reduce a lot of bridge piers and reduce construction costs.

In addition, there is no need to worry about mudslides and landslides on the side of the mountain, and there is no need to work hard to build fixed squares.

The head of the construction team led Huang Xiuyuan and Academician Li Fen to some of the roads that had been built. The main body of the road was a super-large "pipeline". Since it was a two-way lane, it was built into two pipelines.

This super highway in Xiuwen County is a one-way 4 lane, plus an emergency lane, that is, 4+1, with a width of 22 meters, and a combined total of 44 meters in both directions.

Hello everyone, our public account will find cash and red envelopes every day. You can get it by following it. The last benefit at the end of the year, please seize the opportunity. Official account [Book Friends Camp]

The height of the road pipe is 6 to 11 meters, which is consistent with the height of domestic expressway tunnels 6 to 7 meters.

As for some people who are worried about the melting point of silicate-sodium chloride crystals, they don’t need to worry too much, because silicate-sodium chloride will not melt completely until it reaches 382 degrees Celsius.

Moreover, the silicon nano-coating outside can withstand more than 800 degrees Celsius, and basically will not collapse due to wildfires, car accidents, or the like.

Especially the short-term high-temperature combustion does not pose an obvious threat to the super highway itself.

Even if the silicate-sodium chloride crystal is melted, the silicon nano-coating will not leak out, and the structural strength will be restored soon after cooling.

Huang Xiuyuan looked up and saw street lights, traffic lights, and signs on the top of the road pipe. There were some ventilation openings on the inclined surface of the valley side.

"Mr. Huang, come down to the underground pipeline and take a tour."

The head of the construction team opened a manhole cover on the sidewalk next to the emergency lane, and a staircase led directly to the lower floor.

Several security personnel took the lead and went down to the underground floor.

After a while, one of the security personnel came up and Zhang Lei immediately understood: "Chairman, you can go down."

The group walked down the stairs, and there were two ballastless pipes below, with the pipe specifications consistent with the high-speed rail.

This layer has a width of 16 meters and a height of 6 meters. It is specially designed for high-speed railways.

"Academician Li, does this width and height have any impact on the operation of the high-speed rail?" Huang Xiuyuan turned his head and asked.

Academician Li Fen shook his head: "Don't worry, the reason why ordinary high-speed rail is at least 18 meters is because he is worried that the surrounding buildings are too close and the pipelines under the super highway have reduced these problems."

"That's good."

Then the head of the construction team opened the manhole cover on one side of the passage and entered the second underground floor, which was a real secret area.

The width of the second underground floor is 10 meters and the height is 4 meters. It is a non-open highway. In addition to the installation of high-voltage cables, communication fibers, and water supply pipelines, there is also a lane with a width of 5 meters, which can be used as pipeline construction and emergency transportation.

Huang Xiuyuan looked at the empty negative second floor: "Where is the high-voltage cable?"

"Mr. Huang, here." The head of the construction team pointed at a yellow plastic under his feet. He picked up a crowbar and pried open one of the plastic boards.

Huang Xiuyuan took a look and found that it was a long and narrow insulating path, and there was a grid blocking it.

"There is no need for water supply pipelines in the southwest, and the lane width of the negative second floor can be increased."

Regarding Huang Xiuyuan's words, the person in charge of the construction team smiled: "Mr. Huang, please rest assured about this. We have designed the second floor of the southwest super highway, both of which are 9 meters wide and can accommodate two large vehicles driving side by side."

Everyone else laughed and said nothing.

You should know that in some areas, the second floor of the negative is equipped with large elevators, and trucks can pass through the lift to the highway road surface from the second floor.

The road surface of the super highway is not fully enclosed, and some open areas do not require the upper part of the protective layer.

Even in areas with protective layers, you can open a hole by setting up a mobile device.

On the other hand, due to the high-speed rail on the negative first floor, the emergency tunnels and cable areas on the negative second floor are semi-buried underground. In addition to the complex mountainous terrain, the negative first floor and the negative second floor can be connected to other underground projects.

As for which places and locations will be connected to underground projects, they will naturally not be disclosed.

Especially the secret passages on the second floor, power supply and communication companies have no right to send people to enter. If they need to repair and construction, they can only be handed over to a designated engineering department.

After Huang Xiuyuan looked at the first and second floors of the minus, he asked with a smile: "How much does a super highway cost per kilometer?"

"Each kilometer is about 75 million to 85 million. Under mountainous terrain, the cost is already very cheap." The person in charge of the construction team sighed.

Academician Li Fen shook his head and smiled: "It's really cheap. The cost of high-speed rail per kilometer in the southwest region is generally more than 100 million yuan. The cost of Chengguan Express Rail in Chengdu is 200 million yuan per kilometer."

Huang Xiuyuan was quite surprised by this. The super highway that integrates highways, high-speed railways, high-voltage cables, communication fibers and secret passages is so low.

In fact, the cost of super highways is low. On the one hand, it is because land acquisition in mountainous areas is cheap, and on the other hand, the domestic raw materials are not high. Especially the sodium chloride in the Blue Age, which is almost half sold and half given away, so as not to occupy the land and pollute the environment.

It is also related to the characteristics of the super highway itself. It does not require harsh foundations or fixed mountains, and it also reduces the number of bridges and piers.

This is the advantage of integration. In addition to digging tunnels, the engineering difficulty has been greatly reduced.

The only troublesome thing is that during the construction process, there are many professional equipment and technologies involved, and the construction personnel need to have a higher level of education.

Huang Xiuyuan asked another question: "How long does it take to build a one-kilometer super highway?"

"This depends on the terrain. If there is no obvious valley and there is no need to dig tunnels, it is about 13 days a kilometer. If there are canyons and tunnels, it may take 50 to 80 days per kilometer." The person in charge of the construction team explained.

Academician Li Fen patted his shoulder: "This article is just an experiment. When you get familiar with it, you can construct it through multiple stages at the same time and then merge it and pour it together. The speed should be faster."

The group returned to the highway road.

After watching the construction of the super highway, Huang Xiuyuan was about to return to Guiyang.

Although Xiuwen-Bijie's super highway is just an experimental road, the current technical verification has actually been done.

In the future, the construction of super highways in the southwest region will be increased, especially in Shu Province and Yunnan Province, several highways entering the Qinghai-Tibet Plateau will be fully upgraded and transformed into super highways.

The super highways there can also be used as solar power plants, because western Shu, Yunnan Province, and Qinghai-Tibet Plateau are all solar-rich areas.
Chapter completed!