Building a bridge over the Yellow River?

Everyone was stunned, not knowing what to say.

Yan Zhen looked at everyone's expressions, shook his head and smiled, turned to Zhu Yunwen and saluted: "Your Majesty, please explain to everyone Rong Weichen!" ”

"Okay!" Zhu Yunwen nodded, but let out a sigh in his heart.

"Everyone, please look," Yan Zhenzhi hung a drawing on the whiteboard and said, "Actually, it is not difficult to build the railway itself. ”

"When His Majesty was the prince, he promoted blast furnace steelmaking, through the efforts of many engineers in the Institute of Engineering and the Ministry of Industry, the output and quality of steel continued to improve, and the imperial court also built a series of steel mills such as Ma'anshan Iron and Steel Plant in Taiping Province, Daye Iron and Steel Plant in Huguang, Anshan Iron and Steel Plant in Northeast China, Tangshan Iron and Steel Plant in Hebei, etc., the output of these steel mills was not only enough for the Ming army to use, but also a lot of surplus, so the steel mills gradually produced iron ingots and steel ingots to merchants for them to produce various agricultural tools."

"So it's not a problem with the rails."

"The most important thing in building a railway is the rails," Yan Zhen paused for a moment and said, "Other cement, fine wood, etc., are easy to obtain." ”

"Of course, the railway also needs a good locomotive, but this is not a problem, after His Majesty ascended the throne, he increased the research on the steam engine, experienced countless experiments, coupled with His Majesty's guidance, Academician Zheng Pingen of the College of Engineering designed a steam engine that can be used for railway locomotives."

"With these, it is possible to erect the railway, but,"

Speaking of this, Yan Zhenzhi smiled bitterly: "However, in the process of actual site selection and survey, the engineers of the School of Engineering raised a very realistic problem, that is, a railway bridge, a high-quality railway bridge that can be used by trains. ”

"A railway bridge is different from a general bridge, it needs to consider a lot of factors, such as the railway bridge deck must be straight, otherwise the train cannot walk; For example, the weight of railway bridges is much higher than that of today's bridges, because railways are specially used to transport bulk goods, such as grain, sleepers, steel, cement and other items; Another is caused by the particularity of the railway, the railway itself is designed for long-distance transportation, so it is bound to cross some big rivers, for example," Yan Zhenzhi raised his hand and pointed to the north, and said: "For example, the Yangtze River next to the Beijing Division, if you can build a bridge on the Yangtze River, if the bridge can take a train, then please think about it, what is the situation?" ”

Yangtze? Bridge?

All of you here are human spirits, and you immediately made up a picture in your mind, the disaster relief materials and the counterinsurgency army along the railway, across the Yangtze River Bridge, and continuously transported to all parts of the country, that kind of scene - it is really beautiful!

Everyone shook their heads and expelled the sweet dreams from their minds, but alas! I can't do it now!

"Of course, it is not absolutely impossible to build a bridge over the Yellow River, but there are too many factors to consider, and a detailed survey is needed to find a suitable location."

"I wonder what kind of terrain can be used to build bridges?" Song Li, the secretary of the Ministry of Industry, asked eagerly.

"To put it simply, it is a place where the river is slow and the water depth is shallow, and it is also necessary to consider the changes in the water flow throughout the year, such as shallow water in the off-season, the water flow is slow, but in the rainy season, the water flow will be deeper, the water speed will also be faster, and of course, the impact on shipping should be considered......

Yan Zhenzhi lightly threw out more than a dozen factors to be considered, making everyone look at each other, and everyone realized that this thing doesn't seem to be so simple, and they can't understand it at all! But others seem to be like that too!

At this time, no one dares to say that the bridge is strange and ingenious, the advantages of the railway are well known, but if there is no railway bridge, the railway is like a lame leg, the effect is greatly reduced, although this problem can be solved by shipping, but the shipping has to consider the weather, river conditions and loading and unloading problems.

If the railway is cut into sections by the river, and then the goods are unloaded, loaded, unloaded, and shipped again, just thinking about this scene will make everyone's scalp tingle!

Looking at the important ministers who talk eloquently on weekdays, but are silent today, Zhu Yunwen shook his head slightly, he knew that this was because he was too uprooted.

Thirteen years have passed since I woke up that night, and although I have worked very hard, it is still impossible to improve Daming's technical level in an all-round way.

In his previous life, he was a code farmer, and he seemed to be a bit lofty, but in fact he was a nerd, and in this era, Zhu Yunwen found himself often helpless against practical problems.

In the past thirteen years, Zhu Yunwen recalled as much as possible the knowledge he had learned in elementary school, junior high school, high school, and university, and let people record it, and then sent high-achieving students from Guozijian, Engineering College, and Agricultural College to study it.

For example, the three laws of physics, the law of energy and heat conversion, Pascal's law and other basic laws, Zhu Yunwen can only tell those students who admire him a lot, these are just conjectures, and they need to confirm it.

Since three or four years ago, Zhu Yunwen has rarely talked about academic issues with students, because he found that if he can, the students will be able to, and if he can't, the students will too.

However, in the final analysis, Zhu Yunwen understands that his half-baked level has caused the deformity of the academic level of the Ming Dynasty, and some aspects are very developed, Zhu Yunwen feels that he can reach the level of the late nineteenth and early twentieth centuries, but in some industries, the progress can only be said to be minimal......

In addition to discussing the construction of railways in the northeast, the military generals suggested that the northeast should be connected with Rehe and Suiyuan, and that Beijing in Hebei be connected with Datong, Zhanghuan, Tianjin, Baoding, Taiyuan and other places.

The problem of the bridge could not be solved, and everyone did not discuss it, but in the end, which line to build, everyone was eight immortals crossing the sea, each showing their magical powers, and they were arguing.

The quarrel lasted until midnight, and everyone was tired, and finally came to a conclusion:

1. The line in the Northeast must be repaired, otherwise it will be impossible to control the Northeast.

Second, the railways from Beijing to Kaiping and Chengde must be repaired, otherwise the army will not be able to go out of the customs to fight.

3. Of course, the railways in the south of the Yangtze River should be built, and it was initially decided to build a line from Nanjing to Suzhou, Hangzhou, and Ningbo to connect Beijing with the coastal areas.

However, after the meeting, Zhu Yunwen told Yu Xin, Yan Zhenzhi and others that if there is really no money, the railways in Jiangnan should not be repaired in a hurry, and the rails in this era are still relatively expensive!

Yu Xin and Yan Zhenzhi understood each other, and finally nodded, indicating understanding, and then said goodbye.

Looking at everyone's backs, Zhu Yunwen shook his head, it's really a poor and short-sighted! Sheng Yong, when will you be able to bring back a large amount of silver?