And any one of them was formed after tens of millions of years of flowing. The valley is deep and deep, and the deepest point can even reach thousands of meters.

There are steep cliffs on both sides. At any time, huge cliff rocks will be blown down by the strong wind and rolled into the turbulent river. It is dangerous and majestic!

Each of the six rivers has to be crossed. In terms of the overall difficulty, the construction of the six rivers over there is even more difficult than the construction here.

The reason is very simple. To cross a great river, a bridge must be built.

The position of the bridge should not be too high, otherwise the canyon will be too vast and the span of the bridge will be too large.

It must not be too low, otherwise, the tunnel will be too long and a large number of mountains need to be opened.

In addition, there will be splashing falling rocks on the high mountain at any time, which will not only damage the bridge body, but if left on the rails, it will pose a fatal threat to the train!

The only fortunate thing is that when the era of extreme cold comes, the mountains and rivers will condense into one and turn into ice sculptures, and there will be no troubles of chaotic rocks.

Xu Qiu thought a lot.

Extremely cold lines are being laid everywhere.

Before the Little Ice Age, the most important thing was to lay some railways in areas with less difficulty in construction, and then manufacture a few nuclear-powered carriages to try the effect.

and the ability to withstand disasters.

As for the cross-river railway and the mountain-crossing line, there are still ten months to come.

However, six months is still too slow. After all, the straight-line distance from Luding to Zhedo Mountain is only [-] kilometers!

Compared with the hundreds of thousands of kilometers of nuclear-powered extremely cold lines, it is not worth mentioning at all!

Xu Qiu said in a deep voice, "Six months is too slow."

"Let's recruit manpower from the people, and divide it into six construction teams, starting from both sides of Luding and Zhedo Mountains, with three teams on each side, and three teams in rotation. Each team will work eight hours of high-intensity work. Get through this passage!!"

Qu Huamei and the others did not dare to object, and bowed and said, "I will definitely complete the task!" Xu Qiu took the topographic map of Luding and Mount Zhedo, and checked it.

Qu Huamei and others immediately brought chairs, tables and tents, and set up a simple work shed on the spot.

"I need to do a site survey."

Half an hour later, Xu Qiu stood up and said without doubt.

Lu Guangyuan nodded, and immediately pressed the shortcut button on the communicator. Not long after, a helicopter landed there.

Xu Qiu sat in the helicopter and conducted a careful survey around this section of road.

On the way, he marked several places on the terrain map. These are the points that need special attention for future construction, and... the route section with special route design!Two hours later, the helicopter returned to the site of the Luzhe section engineering team.

Academician Qu Huamei and others had been waiting for a long time. Seeing the helicopter landing slowly, they got up to greet them.

"Director Xu!"

The people are shouting, what the people want!

After Xu Qiu landed, he spread out the terrain map without saying much.

"The Luzhe road section is complex and dangerous, and many places are unavoidable. We need to make a big stretch in the undulating mountains and dodge and move around, so as to avoid those dangerous geological bodies!"

After all, Xu Qiu drew a circular sign on the map at the connection point of the mountains,

"Like a small boat avoiding the torrent vortex, passing in a circle, avoiding natural dangers in a way of spreading the line!"

Qu Huamei was horrified, how could the railway be built like this? !

In a short period of fifty kilometers, Xu Qiu used six large exhibition lines!

But after she calculated it, she found that after Xu Qiu adopted the method of laying curves, the final length of the distance was actually only... [-] kilometers!

You must know that the [-] kilometers between Luding and Mount Zhedo is a straight-line distance.

Assuming that no factors are considered, the railway can be built directly, and the final length of the journey may be more than 200 kilometers.

Just increasing the length of tens of kilometers has transformed this steep terrain, which is almost impossible to solve, into a feasible route!

"And here..."

Xu Qiu pinched two points on the map with his thumb and forefinger, here are the two points between Luding and the mountainside of Mount Zhedo.

"The straight-line span is only 1000 meters. With the viaduct, 1000 meters can reach Mount Zhedo from Luding! But if the traditional method is used, the downhill section is first laid, and then climbed from the foot of Mount Zhedo. It takes about nine kilometers.. "

"Build a bridge here and save eight kilometers of route!"

At this moment, Qu Huamei finally understood how Xu Qiu did all this.

Bridges and tunnels are interspersed to offset the lengthening of the line caused by curved laying.

The miraculous route that was finally designed is almost the same length as the original straight line! !

"Director Xu, we... will never let you down!"

Qu Huamei took the map with a serious face and a strong sense of responsibility.

Countless engineers also stood up at this moment, looked at Xu Qiu with admiration and gratitude, and saluted deeply...

A peaceful smile appeared on Xu Qiu's face, and he said generously:

"Who can have powerful comprehensive national strength and hardworking, brave and capable people at the same time, besides the Dragon Kingdom, who else in the world can exist?"

"Facing the world's most majestic mountains and the world's most complex geology, this is a test of our country's engineering construction level.〃

"In the face of ultra-deep and ultra-long tunnels, ultra-deep grand canyons and ultra-high bridges, this tests the technological level of a country's tooling machinery."

"Spanning thousands of kilometers across the Hengduan mountainous area, the difficult and dangerous Luzhe road section, the construction route has traveled thousands of kilometers, and the entry of personnel and equipment, the transfer of raw materials, and the construction of Dalin facilities are all very difficult. This is a test of a country's economy. strength!"

"In the face of high cold and hypoxia, fighting ice and snow, fighting in the wilderness, abandoning family and children, accumulating more than ten years of achievements without changing its ambition... This is a test of whether a country has wisdom, hard work, and bravery. , engineering people full of sacrifice and dedication spirit of soldiers!!"

"How fortunate, our Dragon Kingdom has it all. We all have the mighty national strength and the hardworking people!"

"Just ask the world, who can take on such a grand and majestic project except the Longguo engineer who is known as the infrastructure madman?"

"Who else can give up my Dragon Kingdom?"

These words made the entire people of the Sichuan-Zangzhou railway project excited.

They all looked at Xu Qiu with enthusiasm, and their simple faces showed proud smiles for the country! !

That sentence echoed in the minds of engineers after a long time.

Who else can there be in Shelong Kingdom? !

Rumble!

From the moment Xu Qiu gave the order, the Longguo engineering staff who were stopped by Lu Ding and Zhe Duoshan in front of them finally moved!

-------------Chapter Dividing Line---------------

After Xu Qiu gave an order, the large mechanical equipment made a huge engine roar, and then they operated together to start digging.

At the other end of Luding and Zhedo Mountains, facing the ultra-super-deep buried tunnel, the giant tunnel boring machine was carried to the site to use powerful knives to grind and cut the surrounding rock of the tunnel, layer by layer. Rocks are broken and shipped out.

At the same time, the new generation of Longguo excavation equipment is also on the way to mobilize.

The most cutting-edge equipment is the Fushui dual-mode shield machine!

This shield machine can deal with water-rich sand layers, water-rich silt layers, and bottom layers with extremely uneven hardness!

Even circular and non-circular sections can be transformed at any time!

Cooperating with the rich water dual-mode shield machine, the construction personnel can easily realize the tunneling of the shield tunnel under pressure, and the generated slag is discharged through the screw conveyor or the slag discharge pump.

Then came the tunnel inspection vehicle.

After the tunnel penetration, lining and filling layer construction is completed, machine vision and radar inspection systems are used for inspection.

At the same time, heavy machinery such as large-span and large-tonnage cable cranes, large-span overhead support members, and traveling cable-mounted cranes were also transported to the Luzhe section to support the construction.

Qu Huamei stood beside Xu Qiu, looking at the mountains with thousands of rocks and ravines, and the vast Nu River, weeping.

She pushed back the white hair that blocked her eyes with her hands, and tears welled up on her wrinkled face.

Qu Huamei once again recalled, more than 30 years ago, her husband and she set foot on this land together, exhausted both physically and mentally for the rise of the Longguo Railway.

Snow whitened the mountains,

The years of construction of the Sichuan-Zangzhou Railway have also stained the temples of the engineers.

Today, the Hengduan Mountains are lush and lush, and all kinds of flowers are blooming, but the old people are no longer there.

"I will not live up to your legacy."

"Back then, Longguo needed a railway to break the technological constraints of foreigners."

"But now, the Dragon Kingdom still needs a railway to communicate with the world, a thousand dungeons, and tens of millions of lives..."

August sixteenth.

Xu Qiu hurried back to Tiandu yesterday, and after a night's rest, he rushed to Tiandu Dungeon.

Tiandu No. [-] underground city is one of the underground cities under the direct jurisdiction and responsibility of Xu Qiu and Zou Baitao.

This dungeon covers an area of ​​120 square kilometers, and its estimated population is even larger than the double-deck dungeon in Dawn City.

Moreover, this underground city will also open up a relic area of ​​more than ten square kilometers.

This area will accommodate many historical relics of Tiandu, which are the root of Dragon Kingdom civilization and the symbol of Dragon Kingdom.

Of course, this plan is only in Xu Qiu's mind at the moment, and it will be formally proposed in the later stage of the dungeon construction.

Tiandu No. [-] underground city has two entrances.

The first one is the vertical elevator entrance, which is also the main passage to enter and exit the dungeon in the era of extreme cold.

It is about 50 meters wide and [-] meters high. There is a relatively large elevator that transports [-] meters underground to the surface.

The second entrance is the entrance of large equipment.

The entrance is meandering downwards with a relatively high slope. Go straight along this road and circle for about one or two kilometers before you can reach the underground.

The width of this entrance is consistent with the width of the Longguo Standard Expressway, which is a two-way six-lane, 2*11.25 meters, and a height of seven meters.

Preparations for this road have already begun at the beginning of construction.

The original purpose was to let the huge equipment for building the dungeon enter, and to transport the materials, steel, building materials, etc. needed for the construction.

Now, it is also the road for trucks and trucks of the forest transplanting plan.

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