Chapter 153： Start digging a tunnel

The area of ​​the planting house has expanded more than ten times, and the result is that the area of ​​the three underground floors is a bit too large.

I will definitely make adjustments in the future, but let's do that for now.

Most of the materials 　　 brought back were used by Ankai to make mines, and a small part was used to make two new generator sets.

The increase in mines will greatly increase the power consumption.

There is also an expanded planting house. The sun lights use electricity, and more water purifiers are needed. The water purifiers must also use electricity.

In short, the demand for electricity has greatly increased within a short period of time, and will continue to increase in the future, so there is nothing wrong with gradually increasing the generator sets.

Many mines were added in one go. Except that aluminum mines do not need so many at present, the output of iron ore and coal mines has increased a lot.

The output of ore was high, and Ankai immediately updated its smelting equipment.

The system provides several options, there is an upgraded version of the furnace, but this is too low-level, the efficiency is really a bit low, Ankai skips it directly.

also has two editions of blast furnace, one is a relatively simple version, and the other is complicated. The former is similar to the technology used in that special period on Earth, without any difficulty, and the efficiency is acceptable. In the latter case, it is a purely modern ironmaking technology, which is very complicated and of course very efficient. It is a pity that the latter itself requires a large amount of metal materials, and the shelter must be unbearable now. And the volume is too large, it is not suitable for underground construction at all, either to build outdoors, or to make a super large room.

The type with a clear height of several tens of meters is just like a joke. An Kai can't make such a big guy at this stage anyway.

So he chose the simple version of blast furnace.

He can smelt five units of iron per hour. Just erect two blast furnaces. This efficiency is enough for him to use.

Although a large amount of iron is used to construct the subway, considering the speed at which Ankai can build the tunnel, this ironmaking efficiency is sufficient.

As for the more advanced rails, Ankai didn't think about it at all.

is too extravagant, it does not match the situation of the shelter nowadays.

There are also many methods for tunnel excavation. Ankai’s most eye-catching method is definitely the shield excavation method, which uses the so-called shield machine.

The so-called shield excavation method refers to the construction (laying) of the "shield" (referring to supporting segments) of the tunnel while the tunneling machine is digging, which is simple and efficient.

The only problem is that this thing is too expensive!

Not only consumes a huge amount of materials, but also has a lot of supporting facilities, such as shield tunneling machines and after-matching, variable frequency electric locomotives, **** trucks, mortar trucks, gantry cranes, segment trucks, chargers, truck cranes, and mortar mixing stations. Of course, some of these equipment are also required for other excavation methods, but not to mention others, just the shield machine and the directly supporting equipment is a huge expenditure item.

Not to mention that the shield machine itself also needs other skills to support... Yes, just kill them all.

Moreover, the shield machine uses a lot of materials and is very expensive. To be honest, although it is really easy to use, the shelter at this stage can be completely ignored.

If the shelter is really built as an underground city, with a large number of minerals and workers, maybe you can consider building a shield machine.

In addition to the shield excavation method, the system also provides general excavation methods.

This general excavation method does not need to be explained in detail. It is the oldest and most stupid method. It requires air compressors, excavators, grouting machines, pneumatic rock drills, small transport vehicles, forklifts, and ventilators. , Concrete sprayers, mixers and other equipment have a long construction period and low efficiency, but the advantage is that these equipment are very simple to make.

Just... there is another problem here.

Where do the workers come from?

These equipments are not system automation equipment, they need manual operation.

So what does it mean to look at it?

means that Ankai can only use the "stupid" method to make tunnels by building rooms.

Of course, there is no need to make the boxy type.

Directly manufacture the arc-top tunnel, but the way is to build the system room, select the model, then place the model, and then choose to build...one-click fool operation, as long as the material is enough.

This method consumes a lot of materials, and the engineering cycle is also long, so the efficiency is really low.

But it is the best construction method in the absence of manpower.

An Kai had no choice but to let Kent and Philip go out. After collecting a few waves of cement, they began to excavate.

Of course, before that, he first opened the shelter to the fifth floor underground and removed all the equipment that should be moved, including the generator set, all on the fifth floor.

Maybe the power generation can be moved to the sub-base in the future?

Well, it is also possible to transfer the planting and breeding houses.

Let's talk about it then.

With enough cement, Ankai continued to smelt the iron ingots while starting to build the tunnel.

To be honest, this thing is completely beyond his scope of knowledge. An Kai had no understanding of tunnels before, and he didn't understand the specific specifications, dimensions, and load-bearing structures. Fortunately, the system is really a foolish operation, as long as you choose the matching tunnel, rail and carriage.

He chose the lowest level version.

Not only is the technology the lowest level, but also the material requirements. Of course, the speed of the subway is also the slowest, and the carriages are also very small... But it doesn't matter. All he needs is such a means of transportation and transportation. The shelter itself is not currently available. It takes too much capacity to really create the most high-end modern subway, so high speed, so strong capacity, but it is meaningless.

What's more, high-level subways also require special skills support. Ankai does not have The tunnel he built is only about six meters in height, but it is enough.

The shape of the tunnel is fan-shaped, and the top is a round arch. When the system is built, cement and steel are directly added to it. There is no need for him to re-reinforce it. It is indeed very convenient.

The railroad tracks need to be laid later, and Ankai can build the tunnel first.

In fact, if the safety issue is not taken into consideration, maybe he doesn't need to build a subway. If there are tunnels and cars, can he transfer quickly? In the case of the subway, the operation is more secure, and you can move along the track instead of having to operate the steering wheel like a car, and the safety factor can be greatly improved.

Of course, cars still need to be used. The cement needed to construct the tunnel is massive. Ankai alone will definitely not work. The automatic handling function provided by the system can only be used in a small area. Once the distance is too far, It's impossible to achieve this kind of effect, otherwise it would be too horrible, teleporting directly from a long distance, it feels cool to think about it! Unfortunately, the system does not support it.

With the massive amount of cement and steel consumed, An Kai is advancing at a speed of 200 meters a day. The speed is really not slow, but he can't walk away at all, so he can only get started by himself.

If there are any accidents in the shelter, the construction progress will stop. For example, the durability of some equipment is exhausted. On the tenth day of the construction of the tunnel, Ankai has multiple equipment damages at the same time in the shelter. The progress was interrupted at once.

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