"Three, two, one, explode!"

"Boom~~~"

Amid the explosion, a huge rock at the foot of the mountain, which looked like a house, was shrouded in flames and thick smoke, and a large amount of gravel splashed, causing the surrounding ground to "crack" sound.

After the smoke dissipated, the figure of the huge rock had disappeared, and only countless large and small gravels were left on the spot.

Workers wearing hard helmets (swift helmets) appeared from a shelves, walked towards the pile of gravel with various tools, and stepped on the gravel on the ground in "labor protection shoes", making a "creaking" sound.

Yu Wenwen, who was also wearing a hard hat, turned out from his shelves, looked at the pile of gravel, and then the broken wire on the ground.

The patent leather wires were like a dead snake lying on the ground, crooked, but they could still be used to clean up, just a short piece.

Of course, electric detonation requires electric wires. The detonation devices used on the battlefield were now used in strict management and have begun to enter the civilian field (construction) together with explosives, opening mountains and exploding rocks, and exerting their own strength.

Yuwen turned his gaze to the pile of gravels, and then stepped forward.

A quarry needs to turn stones of different sizes into gravel, but it is not easy to break a huge rock that looks like a house. The method since ancient times is to use the principle of thermal expansion and contraction to break the huge rock.

For example, after this huge rock was blown down from the mountain, a large amount of dry firewood was needed to accumulate at the bottom of the stone, and then light a fire and roast it for several days. The stone was burned hot and then poured cold water on it.

The surface of the hot stone suddenly becomes cold, and it can easily fall apart under the influence of thermal expansion (internal) and shrinkage (external), just like a thick-walled glass cup filled with hot water and placed on a cold tabletop and burst.

It can be said that this method is very effective. Since ancient times, not only have quarries been used, but also when encountering huge rocks that cannot be avoided when building mountains and roads, this method can also be used to solve the problem.

Similarly, this method can be used to crush the ore layer in mines.

However, this method of gravel is very time-consuming, and roasting stones requires collecting a large amount of firewood and other fuel, and cannot be cut off in the middle. Once it encounters rainy days, the fire will not last long, so you can only wait until the rain stops before starting work.

In summer and autumn when there are lots of rain, there are many restrictions on roasting gravel. In this way, the construction period of road construction and quarry will be extended, and even if the weather is clear, the output of the quarry will be difficult to increase.

However, it is different now. With fierce explosives and strong explosives, it is easy to break rocks through mountains and rocks (relatively).

But new questions follow: How to drill holes in the boulder as soon as possible to put explosives in?

If you use the traditional method, you have to rely on manpower to use a hammer and a chisel to make deeper holes on the stone. Once the stone is hard, the work of drilling holes will take a lot of time.

In addition, if the huge rock is exploded, some small stones may appear. The size of these stones is much larger than the maximum size that can be processed by a crusher. However, if you use a hammer to smash it, the long strips will be fine, and the ball-shaped stones will take time and effort to smash them.

If using explosives is too wasteful, then what should I do?

Yuwen Wen walked to the pile of gravels and watched the workers follow up on several large stones as big as cows.

A cart was equipped with a machine, which had a boiler, and the workers were burning coal. Because it had been preheated before, steam was quickly supplied to drive an air compressor.

The piston air compressor is like a high-speed air pump, pumping air into a high-pressure-resistant air tank. This air tank is an air storage tank that stores compressed air, connected to a new tool - air drill, through a wire mesh-wrapped Eucommia hose.

When the air pressure in the gas tank reaches a certain value, the compressed gas can drive the air drill to work, and the function of the air drill is to drill holes.

A strong worker, holding a long tube-shaped wind drill, drilled holes in a large stone. Amid the low whistling sound, several deep holes were quickly knocked out.

Another worker, holding another new tool - Fengjian, began to use holes to chisel stones.

The air knitting is also known as the air pick. It is also long tube-shaped. It is powered by compressed air and repeatedly impacts the front pick knitting. It uses the holes drilled out by the air drill to perform chiseling and strikes the stones. It is a new type of crushing tool.

With the sound of "thump" and the stones as big as cows were trembling, and soon cracks were generated in the holes. The workers used a pneumatic pick to "chime" in several holes, and soon they chiseled the stones into pieces.

The air compressor roared and pumped air into the gas storage tank. Because the compressed air in the gas tank consumed a lot, it was necessary to wait until the gas tank was "inflated" before using the air drill and the pneumatic pick to perform the next round of work.

A young and strong man pushed the cart and carried the broken stones to truck and transport them away. Other workers surrounded several other stones as big as cows and began to figure out where to drill holes and chisel them, which would save time and trouble.

Yuwen Wen looked at the work scene in front of him and saw that one quarter of the stone mountain had been "dig" away, and was very satisfied.

The new tools, pneumatic picks and air drills, greatly increase the working efficiency of the quarry. When opening the mountain, use air drills to drill holes deep enough, bury explosives, and then blow the stone down the mountain.

If the stones rolling down to the foot of the mountain are too huge, then a few more holes will be drilled out and exploded with explosives.

If the remaining stones are still large and cannot be processed with a crusher, use a pneumatic pick to chop them into several small pieces, then feed them into the crusher, or manually crush them.

Such a workflow is also suitable for mining, such as coal mines and iron ore mining, which has rapidly increased the mining speed of coal and iron ore. The daily mining volume of miners has increased several times or even more than ten times with the help of new tools.

It is precisely because of the breakthrough in mining technology that the emergence of the giant iron-smelting blast furnace of the Daye Ironmaking Institute’s daily output of 100,000 kilograms.

This new tool powered by compressed air was practical at the end of last year, but for Yuwen Wen, a tool powered by compressed air is no stranger to him: its source is the air gun of that year.

The air gun that uses compressed air as the power to drive the projectiles to form a killing injury was once one of the most powerful weapons in Yuwen Wen's hand. It already had the function of continuous firing before the musket appeared.

But with the end of the war, there was no place to use it.

The air guns that were once used for killing people gradually lost the significance of mass equipment as gunpowder weapons matured. However, the compressed air technology developed with the air guns will not be outdated.

With the maturity of steam engine technology, the "energy capacity" of mechanical air pumps has become stronger and stronger, and has evolved into an air compressor. As the air pressure of compressed air becomes higher and higher, new tools powered by it will naturally appear.

The practical pneumatic picks and air drills at the end of last year were soon popularized in large mines, quarries and construction sites. Ores were collected and the construction speed accelerated, which made the speed of social development unknowingly accelerated.

Yuwen Wen looked at the busy quarry, looked at the men, women, young and old who were busy smashing stones, crushing machines that "chewed" stones, looked at the carriages loaded with gravel, and then looked at the busy railway construction site on the horizon in the distance, breathing a sigh of relief.
Chapter completed!