The rise of nanometers

Come to the construction section.

It happens to be a section of road halfway up the mountain, with towering steep mountains on one side and alluvial valleys tens of meters deep on the other.

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

Even if roads are built in many areas, they still face the threat of landslides and debris flows. In the earthquake-prone western Sichuan area, the difficulty of building roads and the cost of maintenance are very high.

After Huang Xiuyuan and Academician Li Fen got off the car, the head of the construction team of China State Construction Engineering Corporation ran over and said, "Mr. Huang, Academician Li, welcome to come and give us guidance."

"I just stopped by to take a look." Huang Xiuyuan said as he walked.

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 earth and gravel, or leveling the ground.

The advantage of the integrated super highway is that it has relatively low requirements on the roadbed and terrain on both sides of the road. It only needs to compact the ground and have enough area to lay road pipes.

Even for some canyons and river valleys, as long as the width does not exceed 200 meters, the road pipe can be laid directly across it without the need for bridges or piers. The integrated features of the super highway can be used to ensure that the road will not be significantly deformed.

Even for long-span valleys and river valleys, many bridge piers can be eliminated and construction costs can be reduced.

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

The leader of the construction team took Academicians Huang Xiuyuan and Li Fen to a part of the road that had been built. The main body of the road is a super-large "pipeline". Since it is a two-way lane, it was built into two pipelines.

This super highway in Xiuwen County has four lanes in one direction, plus emergency lanes, that is, 4+1, with a width of 22 meters, and a total of 44 meters in both directions.

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

As for some people who are worried about the melting point of silicate-sodium chloride crystals, there is actually no need to worry too much, because silicate-sodium chloride will not completely melt until 382 degrees Celsius.

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

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

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

Huang Xiuyuan looked up and saw that there were street lights, traffic lights, and signs on the top of the road pipe. There were also some vents on the slope on the side of the river valley.

"Mr. Huang, we can go down to the underground pipes and take a look."

The person in charge of the construction team opened a manhole cover on the sidewalk next to the emergency lane, and there was a staircase leading directly to the floor below.

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

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

A group of people walked down the stairs. Below were two ballastless tracks. The track specifications were the same as those of high-speed rail.

This level is 16 meters wide and 6 meters high, and is specially designed for high-speed rail.

"Academician Li, do the width and height have any impact on the operation of 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 rails need to be at least 18 meters is because they are worried that the surrounding buildings are too close. The pipes under the super highway reduce these problems."

"That's good."

Then the person in charge of the construction team opened the manhole cover on the side passage and entered the second underground floor. This is the real secret area.

The second underground floor is 10 meters wide and 4 meters high. It is a non-open road. In addition to high-voltage cables, communication optical fibers, and water pipelines, there is also a 5-meter-wide lane that can be used for pipeline construction and emergency Transportation use.

Huang Xiuyuan looked at the empty second floor: "Where are the high-voltage cables?"

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

Huang Xiuyuan took a look. It was a long and narrow insulated tunnel, blocked by grid panels.

"There is no need for the water pipeline in the southwest. The width of the driveway on the second floor below can be increased."

Regarding Huang Xiuyuan's words, the head of the construction team smiled: "Mr. Huang, don't worry about this. We have already designed it. The negative second floor of the southwest super highway is 9 meters wide and can accommodate two large vehicles traveling side by side. "

The others also laughed and said nothing.

You should know that in some areas, there are large elevators on the second floor below. Large trucks can use the lifts to reach the highway from the second floor below.

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

Even in an area with a protective layer, a hole can be opened by setting up a mobile device.

On the other side, since the high-speed rail on the first negative floor and the emergency secret passage and cable area on the second floor are half-buried underground, and the complex mountainous terrain, the first and second floors below can be connected to other underground projects. of.

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

Especially for the secret passage on the second floor, the power supply and communication companies have no right to send people to enter. Repairs and construction can only be left to the designated engineering department.

After Huang Xiuyuan saw the first and second floors below, he smiled and asked: "How much does the super highway cost per kilometer?"

"It's around 75 million to 85 million per kilometer. In mountainous terrain, this cost is already very cheap." The person in charge of the construction team said with emotion.

Academician Li Fen shook his head and said with a smile: "It is indeed very cheap. The cost per kilometer of high-speed rail in southwest China is generally more than 100 million, and the cost of Chengdu-Guangzhou Express Railway in Chengdu is 200 million per kilometer."

Huang Xiuyuan was quite surprised by this. The construction cost of a super highway that combines highways, high-speed railways, high-voltage cables, communication optical fibers and secret tunnels can be so low.

In fact, the cost of building super highways is low. On the one hand, it is because land acquisition in mountainous areas is cheap. On the other hand, the price of domestic raw materials is not high. Especially the sodium chloride in the Blue Age is almost half sold and half given away, so that these waste materials do not take up space and pollute the environment.

At the same time, 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 a lot of bridges and piers.

This is the advantage of integration. In addition to tunnel excavation, the engineering difficulty is greatly reduced.

The only troublesome thing is that the construction process involves a lot of professional equipment and technology, which requires the construction personnel to have a higher cultural level.

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

"It depends on the terrain. If there are no obvious valleys and no need to dig tunnels, it will take about 13 days to cover one kilometer. If there are canyons and tunnels, one kilometer may take 50 to 80 days." The person in charge of the construction team explained.

Academician Li Fen patted him on the shoulder: "This is just an experiment. Once you get familiar with it, you can construct multiple sections at the same time and then merge them together. The speed should be faster."

The group returned to the highway.

After Huang Xiuyuan watched the construction of the super highway, he was ready to return to Guiyang.

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

In the future, we will increase the construction of super highways in the southwest region. In particular, several highways in Shu and Yunnan provinces that enter the Qinghai-Tibet Plateau will be fully upgraded and transformed into super highways.

The super highway there can also be used as a solar power plant, because western Sichuan, Dian Province, and the Qinghai-Tibet Plateau are all solar energy-rich areas.

Laying solar panels on a super highway, coupled with high-voltage cables underneath, can serve multiple purposes.