I Have a Mansion in the Post-apocalyptic World Chapter 1274: Ultrasonic fence

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As early as last month, the colonial frontline research institute and the laboratory of the Star City finally worked out a suitable frequency.

Through the magic-modified seismic wave excitation device, twelve seismic waves of different frequencies are continuously emitted into the ground, and a "black field" can be created within a range of tens of kilometers underground. In this black field, the devil can't determine the direction correctly, and can't determine the surroundings and the surface, and it will produce strong physiological discomfort.

Experts from various countries in the laboratory call it the ultrasonic fence.

Twelve seismic wave excitation devices were deployed around the colony, and the entire colony was surrounded by ultrasonic waves into a twelve-sided separation wall. Now, with the colony as the center, within a radius of tens of kilometers, it has become a forbidden area for demons and insects.

By this gift, the colonial development work that has been stuck for a long time can finally be restarted.

Under the command of Captain Hong Zewei, the colony ’s engineering team repaired the devastated hydroponic plantations and pastures that were covered by demons. At the same time, in accordance with the plan of the space command center, the first highly automated steel plant was established on Mars.

Mining wells are not needed at all to mine iron ore on Mars.

There are iron ores everywhere on Mars.

This sentence is not false at all.

Pick up a piece of sand from the ground, you can smell the smell of rust.

The raw materials produced are at the bottom of the feet. The newly built iron ore plant only needs to shovel the sand from truck to truck to produce batches of finished steel. Most of the smelted **** is silica, which can be used as a glass or concrete building material after a little treatment.

Some of the steel produced is used for the construction of the colony, while the other part is made of rebar and stainless steel plates to strengthen the surface of the colony.

Yes, steel on Mars is already cheap enough to be used as a floor tile.

The engineering team responsible for construction will first drive the steel bar into the ground, then fill it with cement, pour it into a concrete foundation, and then lay a layer of high-strength stainless steel on the concrete floor. In this way, even if there is a drill bit on the top of the devil's head, don't try to cut through the colonial floor.

Despite the presence of infrasound fences, most people still feel uncomfortable thinking about the tunnels digging under the feet of devil insects. Even if it is just in case, this layer of alloy floor is absolutely necessary.

In addition, the sound insulation effect of concrete is very strong, which can effectively limit the ultrasound to the ground, which is also beneficial to the health of the colonists in the colony.

In addition to the iron ore, the geological brigade where Wang Qiang was recently found a considerable amount of carbon deposit in a crater ten kilometers away from the colony. This pure natural carbon mine is very rare on the earth in an oxidizing environment, but it seems very common on Mars.

Depending on the graphite produced by this carbon mine, the colony can now produce graphene independently without relying on imports from Xinghuan City.

The iron and steel plant and the graphene plant have been completed, and now there are only two tasks left by the headquarters to the colony. One is to establish a space base station on the equatorial line and the other is the 071 project.

Now, the Star Marines has established an operational base above mine 071. The construction team of the colony reinforced the road surface with concrete and steel. At the same time, it also established machine gun posts, communication base stations, accommodation barracks, garages and other facilities.

In addition, the engineering team ’s drilling vehicle has surrounded the 071 mine site, drilled a tunnel through which the infantry vehicles can pass, and reinforced the wall of the tunnel with reinforced concrete to prevent the destruction of devil insects.

Drilling the tunnel to a depth of five kilometers or even deeper is undoubtedly a test for the construction skills of the colonial engineering team. However, they have experienced this test many times. After more than a month of hard work, the drilling rig finally reached the edge of the Gaia civilization ruins under five kilometers.

The next thing they have to do is to drill down around the ruins and drill a spiral channel. After determining the level of the Gaia civilization database, then dig into the ruins.

"This is Team A, we have reached the edge of the unknown area."

Following the back of the rig, looking at the map on the holographic screen in the helmet, Zhang Hai reported the current situation to the headquarters.

"Move forward."

"Received." Ended the communication with the headquarters, Zhang Hai switched the communication to the squad channel, set up the rifle in his hand, and aimed at the front channel. Life signal, we are about to enter the danger zone. Protect the rig, open the insurance, open the fire freely, and move. "

The drilling rig continued to advance, and the engineering truck behind it drove the rebar into the two sides and welded it, while pouring a quick-drying concrete to strengthen the tunnel. The Marines followed, holding the Gauss rifle in their hands and carefully monitoring the front.

If the devil worm may strike from a certain direction, it must be directly in front of the drilling rig,

When the drill bit penetrated a rock wall, the rock in front collapsed, revealing a large space. The rig stopped, and the soldiers on both sides stepped forward, but no traces of demons and insects were found in the hollow layer.

Zhang Hai walked to the nearby rock wall, turned on the tactical flashlight and inspected along the wall, and found the red rock and the bacterial clusters growing on the surface of the rock.

There is no doubt that this is the oxygen supply layer.

Giving a sign to the soldiers behind him, Zhang Hai led the person carefully back into the reinforced tunnel. Just then, a soldier accidentally discovered a strange follicle.

Dark green follicles appear to be half the size of a human. The oily film can see a thin layer of colorful oil spots under the illumination of a flashlight. According to an unknown rhythm, the follicles contract and expand slightly.

I do n’t know if the light from the flashlight stimulated it, and its agitation speed slightly increased.

"What is this?" Pointing the rifle in his hand at the egg, the soldier stretched his hand and pressed it on the helmet, took a few photos and sent it to the squad channel, "Report the captain, find the situation here. "

"Devil insect eggs?" Looking at the image on the holographic screen, Zhang Hai frowned slightly and stepped forward with a rifle. "It's wrong ... stop the drill truck."

The drilling rig stopped drilling forward.

Soon, Zhang Hai contacted the headquarters again.

As soon as the communication was connected, the command side asked.

"What happened? Why did the rig stop?"

"Report Command, this is Team A. We drilled through a hollow formation and found a large number of oxygen-producing fungi and a strange bug egg ... presumably a bug egg." Looking at that one The agitated follicles, Zhang Hai sent those photos to the expedition's headquarters.

"This is the command post. We have received it. We are sending researchers to the target area to take samples. Please wait here for a while."

"Received." After hanging up the communication, Zhang Hai made a gesture to the soldiers behind him, pointing to the sides of the rig.

Before the researchers arrive, they will lay out a simple line of defense here.

"What do you say this thing will be?" Kegiger whispered on the communication channel nervously aiming at the bug.

"I do n’t know, maybe it ’s a mutant devil bug? Maybe it ’s a new species that we have n’t seen before? To be honest ... I have seen even that kind of thing, even if God is his old man standing in front of me, I It won't be strange anymore. "

Listening to the sound of teammates chatting on the communication channel, Zhang Hai looked at the egg.

I saw that the egg was like a living heart, pulsating according to a certain rhythm.

I do n’t know why. Looking at the egg, he felt a strong unease in his heart ...