Chapter 1274 (1/2)

As early as last month, the Frontier Research Institute of the colony and the laboratory of star ring city jointly studied and finally found out the appropriate frequency.

Through the magic transformation of the seismic wave excitation device, 12 different frequencies of seismic waves are continuously transmitted to the underground, and a ”black area” can be created within the range of more than ten kilometers underground. In this black area, the devil insect can not correctly distinguish the direction, nor can it distinguish the surrounding and surface conditions. At the same time, it will produce strong physiological discomfort.

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

Twelve seismic excitation devices were deployed around the colony, which surrounded the colony with ultrasonic waves to form a dodecagonal isolation wall. Now, with the colony as the center, within a radius of more than ten kilometers, it has become a forbidden area for devil bugs.

Thanks to this, colonial development, which had been stagnant for a long time, could finally be restarted.

Under the command of Captain Hong zewei, the engineering team of the colony restored the damaged hydroponic plantations and pastures that were arched by the devil bug. At the same time, according to the plan of the space command center, the first highly automated steel plant was built on Mars.

There is no need for a mining well to mine iron ore on Mars.

Mars is full of iron ore.

This is true.

If you pick up a handful of sand from the ground, you can smell the rust.

The raw materials for production are just under the feet. The newly-built iron ore plant only needs to shovel trucks and carts of sand into the boiler to produce batches of finished steel. Most of the slag after smelting is silica, which can be used as glass and concrete building materials with a little treatment.

Part of the steel produced was used for the construction of the colony, while the other part was made into rebar and stainless steel plates to reinforce the surface of the colony.

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

The team in charge of the construction will first drive the steel bar into the ground, then fill it with cement and 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 the devil bugs grow a bit on top of their heads, they won't be able to cut through the colony's floor.

Although there is an infrasonic fence, most people still feel uncomfortable thinking that there are tunnels dug by devil bugs under their feet. Even 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 ultrasonic wave underground, which is also conducive to the health of the colonists in the colony.

In addition to iron ore, Wang Qiang's Geological Brigade recently discovered a considerable amount of carbon ore in a meteorite crater 10 kilometers away from the colony. This natural carbon ore is rare on earth in an oxidizing environment, but appears to be common on Mars.

Relying on the graphite produced by this carbon mine, the colony can now produce graphene on its own, rather than relying on imports from the ring city.

Both the steel plant and the graphene plant have been completed. Now, there are only two tasks left for the colonial headquarters. One is to build a ground base station for space elevators on the equator line, and the other is project 071.

Now, starring Marines have set up a base of operations above mine 071. The colonial construction team reinforced the road surface with concrete and steel. At the same time, it also established machine gun tower, communication base station, accommodation barracks, garage and other facilities.

In addition, the drilling truck of the engineering team has drilled a tunnel for the infantry vehicles to pass around the 071 mine spot, and reinforced concrete has been used to reinforce the wall of the tunnel to prevent the devil from damaging.

It is undoubtedly a test for the construction technology of the colonial engineering team to drill the tunnel to five kilometers or even deeper. However, they have experienced this kind of test many times. After more than one month's efforts, the drilling rig has finally reached the edge of five kilometers of lower Gaia civilization relics.

The next thing they have to do is to drill down around the remains, making a spiral passage. After the stratum of Gaia civilization database is determined, the excavation is carried out into the relic.

”This is team a, we have reached the edge of the unknown area.”

Following behind the rig and looking at the map on the holographic screen inside the helmet, Zhang Hai reported the current situation to the headquarters.