Extreme Cold Era: Shelter Don't Keep Waste

To build the shelter, there is a problem that Perfikot must solve, which is the shield machine.

Although the shield machine may not be impossible for the engineers and alchemists of this era to build if the requirements are known, clearly, in an era where even the swinging arm drill hasn’t been invented yet, making a shield machine that meets Perfikot’s requirements is quite difficult for these people.

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In Perfikot’s original world, the most primitive shield machine was indeed invented during the same era, but rather than being a shield machine, it was more of a construction method.

The engineers at the time found inspiration through the method of shipworm drilling wood, dividing the tunnel boring working surface into several small work windows, with each window having a worker responsible for excavation. After digging the underground soil and rocks, the worker would transport the excavated soil and rocks away, and the frame of the entire working surface would move forward, with the excavated parts being supported by bricks and cement walls.

This working method was the earliest shield tunnel boring model, providing the foundation for modern shield machines, but it is hard to call it a shield machine.

Moreover, although this method’s work efficiency is higher than purely relying on manpower, the excavation speed is still too slow.

One must know that in the original world, the world’s first tunnel built using shield technology took several years to complete, and they only dug a tunnel beneath the Thames River in London.

Thus, Perfikot obviously cannot choose this method; she wants to create a boring device that at least conforms to the concept of a shield machine.

This kind of boring device also appeared in the history of the original world, or rather, it was the true ancestor of the modern shield machine.

The front end of this machine has a huge rotating arm equipped with sharp and robust blade heads that can cut down rocks and soil and then transport them away via conveyor belts, with the entire machine being continually pushed forward using hydraulic devices.