Infrastructure masters in the red building

Jia Fang decided to research body armor when he and Shui Xian agreed to start research and development of rifled guns.

Body armor is not armor.It does not expect to rely on a solid surface to block the damage of high-speed fragments to the human body. More importantly, it can absorb or dissipate the momentum of fragments, so as to protect the wearer's body from or less damage.

Since ancient times, people have studied many kinds of materials, such as various metals, rattan, hemp, and natural fibers, as "armor" to protect the human body in battle.However, this kind of protection must protect the vitals of the wearer on the premise of not damaging the wearer's normal ability to move.

After a series of experiments, Jia Fang found that the fabric of natural materials has a very good effect in this aspect, so he came up with such a small vest.

The small waistcoat is made of dozens of layers of silk, fastened with needles and threads.At the moment when the bullet touches, each layer of silk plays a role in dispersing the force, and eventually the energy of the bullet is exhausted.

"So the fabric is indeed useful." Shuixian said thoughtfully.

Jia Fang nodded: "However, we may consider installing a thin steel plate or even a ceramic plate on the innermost layer of the vest to block the force and prevent the wearer from being hit and causing internal injuries."

"En!" Shui Xian nodded, but still seemed a little unwilling, "Dozens of layers of silk, the cost is indeed a bit high."

Jia Fang laughed, and said: "When your oil refining technology improves, and then you can produce synthetic fibers, this will not be a problem."

However, Shui Xian cares about the cost, which makes Jia Fang very happy-this proves that Shui Xian does not only intend to build such rare "body armor" for the royal family, nobles and senior military officers.He obviously wants to build this protective gear for more people within a certain budget, so that these people can safely engage in related occupations.

The group stayed in the shooting range for a while, repeatedly testing the performance of the firecrackers, armor and "little vest", and did not leave the shooting range until dusk gradually deepened.

The shooters carefully wiped the firecrackers with oiled cloths, then wrapped them in raincloths coated with waterproof rubber, and sent them to a safe.The combination lock on the warehouse door is controlled by two guards respectively to ensure nothing goes wrong.

Shui Xian and Jia Fang watched the safe storage of these dangerous weapons, and then left in peace.

"The technology is already there. Are you going to start mass production? If so, how much?" When the two were riding together, Shui Xian discussed with Jia Fang.

This is another difficult problem——Jia reassuredly thought: In fact, this requires him to judge the extent to which conflicts with the other party may be in the future.

It is not good to have a flood of weapons, but if there are not enough, it is easy for him to lose the opportunity and be at a disadvantage in armed confrontation.

He is not a merciful holy father, so he said two numbers to Shui Xian immediately.Shui Xian nodded and said, "I guess you will make such a plan."

Jia Fang shook his head: "Even if I don't want to, there is no way out now."

Shui Xian was silent for a moment, then nodded, and said: "That's true. And I have no other choice, I can only support you."

It was getting late, and the two of them held hands together in the dark carriage, and clasped their fingers together.Jia Fang felt a little warmth in his palm.

Suddenly, a warm light came in from outside the curtain of the car.As the carriage moved, the light source gradually moved away, and Jia Fang saw his own shadow falling on Shui Xian, gradually elongating... A moment later, another same warm light shone outside the carriage, dragging Another shadow appeared, moving quickly as the carriage moved forward.

Jia Fang suddenly realized: "Street lamp?"

Shui Xian lazily half-lyed in the carriage, nodded: "We're almost at the station."

Jia Fang excitedly lifted the curtain of the car to look, and sure enough, he saw street lamps equidistant from each other on the side of the road, the lights were dim but warm.In the distance is the station where they got off when they came, and there is a small platform.

Listening carefully, there seems to be the sound of a whistle in the distance. I don't know whether the steam locomotive was a small steam turbine on the sea at that time.

Jia Fang felt in a trance that he had returned to his own era.But to be honest, the distance between the two eras is not far away, and the existence of Jia Fang accelerated the shortening of the distance for a while.

The carriage sent Shui Xian and Jia Fang to the platform.Here they will catch the steam locomotive that takes the night shift workers to work, and go back to the small garden together.

While waiting, a locomotive carrying off-duty workers passed by. Although the noise of the locomotive was deafening, people in the car could still hear laughter and laughter.The workers who have completed a day's work seem to have gained incomparable relaxation and happiness in addition to their wages for the day.

So Shui Xian asked: "After get off work... are you so happy?"

Jia Fang nodded.When he was working before, the longest time he tried was two days and two nights without leaving the office, and he worked out all his ideas and concepts on the project, and he was so happy that he flew off in one go.Of course, when he came home after finishing, his feet were like walking on cotton-overwork is not recommended, but that sense of accomplishment and satisfaction has something in common with the workers here.

"I want to remember everything you said." After Jia Fang finished talking, Shui Xian suddenly whispered.

Jia Fang let out a "hmm" and pointed to the other end: "Here we come!"

In the night, the steam locomotive spouted billowing white steam, and under the illumination of the street lamps, covered with a halo of changing light and dark, it came towards the station.

The two stayed in Xiaoyuan for one night, and went back to Taoyuan Village hand in hand the next day.

It happened that there was a major event in Taoyuan Village: under the guidance of Jia Fang, the technicians of Taoyuan Village refitted a steam steamer.On this day, the small steamer launched its trial voyage, and all the people in Taoyuan Village ran to watch the excitement.

The small steamer sailed on the lower reaches of Qingfang River.The water from the upper reaches of Qingfang River flows into Qingfang Lake after passing through Qingfang Bridge.There is a gap between the water surface of Qingfang Lake and the downstream river, and a waterfall is formed between the two.The river where the small steamer sailed is just downstream of this waterfall.

Now a dam has been built downstream of the waterfall, blocking the view of the waterfall, and the water from the upper reaches of the Qingfang River gushes out from the three sluice gates left at the unclosed part of the dam body.

When Jia Fang saw the dam, he thought to himself: Good guy, it was built really fast.

But the fact is that everything else in Taoyuanzhai is fine now, except that the steel-concrete structure building is about to fly off—the aftermath of the protective wall built last time. When everyone sees a similar project, they rush They are trying to finish them all, and they are running after each other, and they seem to enjoy the process of pouring cement and concrete more than others.

The dam is a simple gravity dam, built next to the waterfall. The villagers of Taoyuan Village dug a deep foundation for the dam during the dry season.Ordinarily, there is a certain degree of waste of resources in gravity dams. After all, this kind of dam has a large volume and a large amount of cement, and the strength of the material has not been fully utilized.But who made Taoyuan Village the most indispensable thing is cement?

Now the dam has taken shape, except that the impellers that should be placed in the sluice for generating electricity have not yet been installed.

But there is no rush.It hasn't been long since Gui Xiaxue discovered electromagnetic induction, and he has to wait until he understands all those principles thoroughly before talking about hydroelectric power generation.

On the land on one side of the dam, the cog railway built on the slope has just started.Workers are still laying foundations on the slope. After all, the rails with cogs need to be firmly fixed on the ground.

When Jia Fang came to the river, the river was crowded.

Someone saw Jia Fang and Shui Xian, and immediately shouted: "Who will make room for Mr. Jia!"

The villagers in Taoyuanzhai had a high degree of awareness in this regard, and a group of people immediately gave way to a gap, allowing Jia Fang and Shui Xian to walk to the Qingfang River, and saw the "little steamer" that had just launched into the water.

This small steamer is a wooden hulled boat. After reconstruction, a single-cylinder steam engine was installed, and the wooden barge near the steam engine was covered with a layer of iron plates, which can be regarded as an additional fire measure.

This small steamer is quite different from those hybrid boats under Suixian's command that are equipped with "paddle wheels". A set of propellers.

After the steam engine starts to work, the propeller turns, driving the small steamer forward and even backward.

But the small steamer itself is not big, it only has one floor, and there is a cargo hold, but all the cargo in the cargo hold is coal for the steam engine of the small steamer.Not to mention loading, it can only load the coal that it reaches the short section of the downstream Xijiang tributary.

Shui Xian finally couldn't hold back his curiosity, and asked Jia Fang: "So this small steamer can only carry you and me, is it for sightseeing?"

Jia Fang pulled his arm immediately: "Please, please, today I invite you to put me on the boat and enjoy the scenery on both sides of the Qingfang River."

Shui Xian looked at him: "You don't do such thankless things."

Jia Fang then laughed, and said: "If this small steamer is placed on land, it is equivalent to the locomotive of a train. If the carriage is attached to the rear, it is a freight carriage, and if the passenger carriage is attached to the rear, it is a passenger carriage... "

Shui Xian immediately understood, clapped his hands together, and said, "I understand."

"You little steamer, you can be used as a tugboat. A cargo ship becomes a cargo ship, and a passenger ship becomes a passenger ship."

Jia Fang nodded with a smile, and said, "Your understanding is really good!" That's indeed what he planned.

In inland waterway shipping, the wind and waves are small, and the steam engine can provide enough power for the tugboat.In the form of tugboats, it also avoids large-scale modification of existing ships, which is a very economical way of operation.

In the future, with the further reduction in the cost of various shipbuilding materials, tugboats with steel hulls can be manufactured on inland rivers, and their strength and lifespan will be much better than now-but the small steamer in front of you, plus the ready-made flat-bottomed cargo ship And passenger ships are already the most powerful transportation combination.

Seeing the enthusiasm of the villagers on the shore, the boat boss immediately rushed to the shore, shook his hand, and blew his whistle.

"Woo--" There was a long sound, and the son of the boat boss started the small steamer on the boat.

People on the shore can hear the sound of "chug chug", which is different from the "kuci kuci" of steam locomotives.But the small steamer stopped on the Qingfang River, but there was no movement.

Before the big guys started talking, suddenly someone pointed at the hull of the boat and said loudly: "Look!"

I saw ripples on the water surface behind the hull, and then the hull slowly moved forward, and the sound of "chug chug" became louder and louder.One of the chimneys on the little steamer began to spout white steam, and the little steamer started steadily downriver.

"So fast!"

Someone on the shore exclaimed.

This is the second time after the steam train, the villagers of Taoyuanzhai have seen a means of transportation that can move by itself without the help of other external forces.

"Not as fast as a steam train," someone retorted.

"Don't be like this. One is a boat and the other is a car. The two travel in different environments, so they can't be directly compared! Besides, you measured the speed of the steam wheel and the speed of the train? Have you taken into account the effect of water flow?"

The villagers in Taoyuanzhai have all received dialectical materialism thinking training and ideological education, and they are not very interested in such simple and crude conclusions.

In the midst of this debate and discussion, the "chug chug" small steamer went far downstream.

At this moment, Jia Fang felt that something was wrong, but he couldn't tell—maybe the air pressure was a little low today, which made him feel stuffy and tinnitus?

Shui Xian soon realized that something was wrong with Jia Fang, turned around and asked, "What's wrong?"

Jia Fang shook his head: "Nothing! It's just that I feel a little uncomfortable in my ears, as if I can always hear other voices."

Shui Xian said "hmm", with a raised tone and raised eyes, and turned to the blue-gray standing dam behind Jia Fang.

Before he finished his research, the villagers suddenly became lively again.Someone shouted: "Look, you're back!"

"Upstream is back!"

The sound of "chug chug" in my ears became louder and louder, and I saw that the little steamer turned around and went upstream, coming from the downstream towards Taoyuan Village.

When the boat approached, the villagers discovered that behind the boat, there was actually a cargo barge moored downstream.The barge had a deep draft, and it looked like it was carrying a heavy load.However, the small steamer carried the weight lightly, dragging the barge along the river and quickly driving towards the pier.

The applause and cheers of the villagers were extremely warm.Shui Xian said in the middle: "No!"

Shui Xian suddenly shouted: "Get out of the water!"

At the same time, near the pier, some villagers also noticed: "The ripples on the water surface don't seem quite right... I don't feel the wind!"

Jia Fang lowered his head, followed what others said, and felt it: there were fine and dense ripples on the water, not because of the wind blowing the water, let alone the small steamer coming from downstream, but because of... ...the surface of the water is shaking by itself.

"Back away!" Jia Fang also yelled.

But his voice, like Shui Xian's voice, was completely lost in the lively cheers and discussions of the villagers.

Only a few villagers who reacted quickly patted the people around them, gesticulating and urging their companions to back away.

At this moment, someone suddenly shouted: "Look at that dam!"

From the three sluice gates of the dam, three jets of water jumped out like a waterfall, and the water splashed, immediately splashing all the villagers waiting by the river.

Everyone was stunned by the sight in front of them.There was a moment of silence at the pier—the small steamer just stopped its motor at this moment, and there was a moment of silence by the water.

This moment was fleeting, and as Jia Fang shouted: "Get out of the water!" The exclamation of the villagers suddenly rang out.

"The dam is about to collapse!" someone shouted.

The water surface of Qingfang Lake is about a few feet away from the water surface downstream. According to Jia Fang's conversion, it is only about ten meters high, and the height of a three-story building.The Qingfang River Dam built in Taoyuan Village is five feet high above the water surface in the downstream.If the dam breaks, the people downstream of them, including Jia Fang and Shui Xian, will all have to finish their game.

At the moment when everyone was in chaos, there was a thunder-like sound from Qingfang Lake.This exacerbated the panic of the villagers, and everyone turned around and fled to a higher place desperately, not even caring that their shoes were trampled off.For a while, the pebble beach by the water was full of lost shoes.

But Jia Fang thought at this moment: I can't escape alone.

As soon as he stretched out his hand, he grabbed Shui Xian's forearm.Shui Xian grabbed him with a backhand.Just as the two were about to leave, there was a sudden cry in their ears.When Jia Fang turned his head, he saw a five or six-year-old boy who was left by some careless parents on the bank of the river, and just fell behind them.

Jia Fang hesitated, and Shui Xian had already let go of his arm.

The two totally thought of going together at the same time.Shui Xian let go of Jia Fang, and Jia Fang rushed towards the child, carried the little guy on his shoulder, turned and ran.Turning around, Shui Xian was still waiting for him on the river beach.

The thunderous sound lasted for a long time, and Jia Fang's heart almost jumped out of his mouth.Carrying the child on his back, he strode crookedly, and the moment he almost lost his center of gravity, he was grabbed by Shui Xian, and the two of them, shoulder to shoulder, rushed up to the high place on the river bank with the boy.

Here, the villagers raised their heads in unison, looking at the dam above the Qingfang River.

Jia Fang heard a villager say tremblingly: "It turns out...the dam didn't collapse!"

He quickly looked towards the dam, and saw three jets of water rushing out of the sluice gate, but the dam itself showed no sign of collapsing at all.

Jia Fang thought about the structure of the dam and finally understood: "It's not that the dam is about to collapse! Our dam is fine!"

"It's the waterfall at Qingfang Lake that has collapsed!"

Qingfang Lake was when the "Taihang" and "Wangwu" landslides, a large number of falling rocks rolled into the channel of Qingfang River, blocking the flow of water, forcibly lifted Qingfang Lake like a reservoir.

Taoyuan Village built a dam on the Qingfang River, guessing that the rocks silting up behind Qingfang Lake might be washed away by the current. This dam was built to protect Qingfang Lake and also for the safety of the downstream.

But no one thought that the waterfall at the back would not collapse sooner or later, but it just collapsed today when the villagers gathered on the shore to watch the small steamer.

Jia Fang's heart is also hanging high.When he led people to design the dam of Qingfang River, he calculated the water volume when the water level of Qingfang River was the highest, and calculated the minimum stress level of the dam from this.He is confident that the dam can withstand the peak water volume of the Qingfang River during the wet season, but he did not take into account the impact of falling rocks and collapses.

The bearing capacity of the gravity dam is a certain amount - Jia Fang can only comfort himself in this way.

How much richer he is, and whether he can withstand the impact of the collapse, Jia Fang can only say "I don't know".

But in any case, they have at least survived the first wave of shock.The dam body is still stable, there are no cracks or water seepage.

Jia Fang could imagine that the fallen rocks that once piled up a waterfall had been washed away by the water and fell to the bottom of the dam.And the gap between the waterfall and the dam should have been filled with water.If he was right, the Qingfang Lake Dam should finally become a "normal" dam by now.

"Master Jia!"

"Lai Xinger!"

Jia Fang was still in a daze, the child on his shoulders, his parents and family came to find him.

When the child's parents were in a mess just now, they forgot about their own baby. When they settled down for a while, they found that the dam hadn't collapsed. When they turned around and found that the child was gone, they were scared out of their wits.

Then some folks pointed out: "Take a look to see if it is your baby. Just now I saw Mr. Jia and Mr. Shui carrying him back from the water."

The child's parents came up to thank Jia Fang, and asked the child to kowtow three times to Jia Fang and Shui Xian.

When they left, Jia Fang looked at the people around him suspiciously, and asked puzzledly, "Why do they seem to have a different attitude towards you?"

Shui Xian touched his nose innocently and said, "I guess it might be because of my surname Shui?"

Jia Fang suddenly laughed.

At this moment, he felt as if all the strength in his body had been exhausted, his hands and feet were limp, and he simply sat down on the river beach, staring at the dam——he was waiting.

At this time, the water surface of the lower reaches of the Qingfang River calmed down again, and the ripples caused by the vibration disappeared.And Jia Anxin had already gone through the entire calculation and construction process of the gravity dam of Qingfang Lake Dam in his heart.

At last he was convinced that he was absolutely sure.

So he stood up, turned around, faced the villagers in Taoyuan Village behind him, and shouted loudly: "Folks, it was a false alarm just now!"

"Now I have good news to announce!"

"The Qingfang River Dam we built has passed the preliminary test!"

The common people had already recovered from the shock. After hearing what Jia Fang said, they looked at the intact dam body and the sluice gate with water jets gushing out.People finally clapped and applauded again.

Facts have proved that Jia Fang's deduction is completely correct.

After what happened that day, Taoyuan Village evacuated all the villagers for safety reasons, including the small steamer that was about to be put into use on the downstream channel.

The next day, when Qingfang Lake and the dam were completely stable, they sent people to investigate the dam, and the conclusion was exactly the same as Jia Fang’s previous speculation: the falling rocks that had silted Qingfang Lake had completely collapsed. But because of the barrier of the dam, these falling rocks fell to the bottom of the lake, inside the dam.

The dam replaced these falling rocks, maintained the state of Qingfang Lake, and thus became a real dam, unlike before, there was a waterfall between Qingfang Lake and Qingfang Lake.

Jia Fang really couldn't help thinking: Why is his luck in Taoyuan Village so good?

If the dam was completed half a month later, there would be no Qingfang Lake in Taoyuan Village, and the downstream would be turned upside down. I don't know what it would be like.