Rising: Ten Thousand Years Chapter 486: ：Shield machine
Kyushu Academy of Sciences.
"Master Li, there is a telegram from Quancheng County."
"Say."
"The line surveyors said that the total length of the straight line from Laoshan to Quancheng County is 300 kilometers, but it needs to dig through ten mountains and dig ten tunnels. The total length of the tunnels is 20 kilometers and the cost is one billion yuan. If you don’t dig a tunnel to go around, the length of the journey will increase by 120 kilometers, and it will be estimated to increase by one hour to one hour and twenty minutes according to the speed per hour. This tunnel, whether it is dug or not.”
Li Zhen pondered for a while, and asked: "One billion twenty kilometers... how long will it take to dig through twenty kilometers?"
"Tunnel digging is mainly done by hand. The workers mainly use chisels and hammers to knock down bit by bit. A tunnel project requires 2,000 workers to excavate from two ends and gather at the middle point. If twenty-four If there is no rest every hour and the shifts are switched, the two sides will progress together, and the length of the excavation will be about half a meter a day. If more workers are invited, ten tunnels will be dug together, and the longest tunnel will be five kilometers. If there is no accident... "
Li Zhen said, "Twenty-seven years?"
"Ahem..."
The atmosphere fell silent.
Many people just calculate how much money it will cost, but they don't calculate how much time it will take.
In the opinion of most people, tunnels are just dug. It is estimated that it will be dug out in a few days.
But if you do the calculations carefully, you will know what a huge project it is to dig a tunnel. If you calculate a tunnel of five kilometers, it will take 27 years to dig. It not only frightened outsiders, but also frightened Li Zhen. Digging for 27 years just to save 20 kilometers of road? How to calculate, how not cost-effective ah.
"Master Li, what should I do..."
Li Zhen blinked his eyes and asked, "Then what do you think?"
"I... this. Not digging."
"That's right. Go reply to the telegram...wait."
Li Zhen quickly stopped the telegraph operator again: "How about this? Forgive me first, let the railway pass through first, and start work on both sides, while laying the detour rails and digging tunnels at the same time. If you don't dig now, don't you do it in the future?" Digging? This tunnel still needs to be dug."
"Really dig?"
"Dig."
“…”
In Quancheng County, Du Taiping was relieved when he received Li Zhen's telegram. He was really afraid that Li Zhen would dig a tunnel. The cost of one billion yuan is really scary. But after seeing the telegram, it said that digging was still needed, but both sides started work.
While laying the rails for the detour, use them first, and dig tunnels at the same time.
Du Taiping was about to cry: "Why do you want to dig? One billion, who can dig it up? It's not worth the loss."
The secretary-general of the office looked at the telegram and was silent for a while and said, "My Son, President Li should be preparing for the future, right?"
Du Taiping nodded: "I know. If you look at the geographical map, the straight-line distance from Laoshan to Quancheng County has been shortened, and the distance of the entire Dongzhou has been shortened by half. All the counties and counties along the way have benefited. This is to prepare for the future. High-speed The road is not available now, but it will definitely be used in decades or more than ten years. It’s just that the investment is not directly proportional to the harvest, and who can afford a billion gold certificate?”
"Actually, one billion yuan is not needed. The emperor may not have thought of this. It doesn't have to be a billion yuan immediately. The one billion yuan is the estimated total cost, but for such a long time, it probably only needs to be paid every year. Pay 10 to 20 million gold coupons. One billion is paid in ten or ten years, and we can afford it.”
Du Taiping suddenly came to his senses when he heard the words, yes, he was a fool. One billion yuan is definitely not available, but it will be fine if it is paid in installments.
Took the map of Dongzhou again and looked at it again. After a while, Du Taiping made a decision: "Then dig. But since this is a big project, let's do it a little bit bigger at a time. Don't go to Quancheng County from Laoshan Yes, get through directly. Laoshan, passing through Weifang, Qingzhou, Quancheng, Liaocheng, Anyang, Jiaozuo, and Balong City. Directly buy and sell with a hammer, and break through Dongzhou and Zhongzhou. The same is digging, and it will take so much time. Then just get through it directly."
Looking at the straight line drawn by Du Taiping on the map, the Secretary-General's eyes lit up: "Then let's just open up the new Kyushu. Dongzhou, Zhongzhou, Northwest Prefecture, Xizhou, and four continents all run through."
Du Taiping rolled his eyes: "Don't fantasize. Re-estimate the cost, get an accurate figure, and then ask Dean Li."
Three days later, the news came back gasping.
"Tianzi, from Laoshan, open a straight line all the way to Balongcheng. During this period, forty-six mountains and a total of forty-six tunnels will be excavated, with a total length of 103 kilometers and a total cost of 5.5 billion gold certificates Expected..."
Du Taiping cleared his throat: "Forget it."
“…”
————-
A few days later, Li Zhen couldn't help laughing when he heard about Du Taiping's grand idea. Isn't Du Taiping very timid and cautious, he even wants to eat a fat man in one bite and directly dig through the new Kyushu.
But then Du Taiping said forget it, and returned to the cautious Du Taiping. That's right.
At present, Li Zhen has no idea to do that kind of vast project...
That's horrible. With a construction cost of more than 5 billion, even if it is expected to be completed within 20 years, the annual payment is an astronomical figure. Paying astronomical sums every year and seeing the results after twenty years is too risky. The loss outweighs the gain.
"Let's build bridges honestly."
Li Zhen murmured, and seemed to think of something again: "No, no. I seem to remember that Zhang Zhi told me about the existence of a shield machine before. If we can create that kind of shield machine, will we be able to use it? How about reducing time and cost?”
With a shield machine ~IndoMTL.com~ the tunnel is not a problem.
It's just that Li Zhen feels that the shield machine doesn't seem to be that simple. It should not be enough to add a drill in front of a machine. If it is that simple, it should be called a ground drilling vehicle, not a shield machine.
"When dreaming tonight, I have to ask Zhang Zhi what is going on with this shield machine. Can it be built with the technology of New Kyushu?"|
A murmur. Li Chen no longer thinks about digging tunnels.
It is expected to dig through Laoshan to Quancheng County, and open up more than half of Dongzhou. These things will be completed and implemented by national specialists and professionals from the Kyushu Academy of Sciences.
Of course, the railway still needs to be laid. But now it is a detour, and the tunnel will not be built for the time being. In some places, bridges can be built among the mountains.
The cost of building a bridge is also expensive, although it is not a bridge that directly crosses a mountain. But there are many areas that also need to flow a river across the canyon and build bridges among various terrains.
The cost of building a bridge is not cheap, but it saves a lot compared to building a tunnel. Reading Network