The expansion of the No. 2 base was quite smooth, and Li Ruobai applied for part of the production capacity to produce five large pipeline excavators. The new construction locomotives have the capacity to drive up to 300 meters underground in a day. With these five excavation trucks, an average of 3 meters of space can be excavated every day.

This amount of millions of cubic meters of work has far exceeded the current refining capacity of the base. Li Ruobai urgently increased the production of 10 large-scale refining furnaces, but it was only a drop in the bucket. So I had to pile up the excess earthwork around the base. To prevent obstruction of the view, the new soil was evenly scattered for a week. Raised the area around the base quite a bit.

Li Ruobai is ambitious and intends to dig a huge space 30 meters deep underground. This is the rhythm of rebuilding a No. 2 base.

Chu Jungui had no objection to this, but appropriately limited the proportion of Li Ruobai's production capacity, so as not to delay the production of other equipment.

The construction of the new site was a big deal, and Li Xinyi was also on board, taking charge of a large amount of the design and construction budget.

The expansion of an underground base is not simply a matter of digging a pit, but involves a series of exploration, design, and construction procedures. The girl first used the Cambrian to send a shock wave to conduct a comprehensive exploration of the underground structure, and then directed the excavator to dig into the ground, digging a vertical passage up to 100 meters deep.

Through this passage, the girl had a general understanding of the distribution of the regional structure of the entire underground base. Still reassured, she set up another drilling rig and drilled another 300 meters into the ground to analyze the retrieved samples.

The subterranean soil of the base is the same as predicted, not loose or tight, and belongs to the kind that can be found everywhere on the planet. No valuable veins were found during this exploration, and all that was dug up was ordinary rock. However, this planet has a high content of base metals, much higher than that of its parent planet, but most of them are found in the form of chlorides.

In order to make full use of the underground space, Li Ruobai plans to cut off part of the foundation columns, and then strengthen and thicken the other part as a support column for the new underground space. This part of the work requires a considerable amount of computing power, and the task model designed by Li Ruobai himself requires 2 Cambrian and Candlelight masterminds to run at full strength, and it also takes about a month to complete.

The girl couldn't stand it, so she spent ten minutes modifying Li Ruobai's model, replacing the new algorithm, and then throwing it to the mastermind, and the calculation time immediately changed from 32 days to 3 hours and 20 minutes.

Kaitian immediately seized the opportunity and spared no effort to mock: "Sure enough, it's a second-class human being, and he can't even make a model." I have to take the Queen's hand, don't waste another 45,880 minutes of my precious life. ”

Li Ruobai was furious: "Little thing, don't deceive people too much! ”

Kaitian's eyes emitted a rainbow of light and said, "Let me show you the means of top-level cell life!"

Kaitian called up the girl's model, drastic and chirping, and it only took 10 minutes to successfully change the calculation time from 3 hours and 20 minutes to 31 days and 12 hours.

Li Ruobai was stunned for a moment, and then laughed wildly: "Hahaha! It turns out that the real higher life is 12 hours higher than me when there is a template, which is really a huge progress!"

The light in Kaitian's eyes was messy, and he projected pieces of garbled characters, showing the complexity of his mood at the moment. It was silent, and once again carefully adjusted the model. Li Ruobai watched patiently beside him, and gradually became serious.

This time it took nearly half an hour to open the sky, during which Li Ruobai also made suggestions from time to time, and the two guys worked together to finally change Li Xinyi's model beyond recognition. They looked at each other and smiled, loaded the product of their collaboration into the Cambrian, and then saw that the calculation time went from 31 days to 43 days.

Kaitian and Li Ruobai, you look at me, I look at you, speechless for a while.

A moment later, Kaitian projected a black-and-white sentence: "What can make two fools come to a consensus must be an even more stupid idea." ”

Li Ruobai nodded silently.

At this time, even if the sky is not opened, Li Xinyi's model has been calculated and the architectural plan has been given. After getting the plan, Kaitian and Li Ruobai silently divided their labor, and never mentioned the modification again.

Li Ruobai is responsible for fine-tuning the plan in real time according to the situation on site, while Kaitian is responsible for dismantling the tasks, optimizing the process, and assigning the tasks to each worker.

Moments later, the excavation was in full swing. Li Ruobai held a virtual engineering drawing in his hand and watched a large roadheader drive into the square, and then keep digging down.

Countless pieces of earth and gravel are sprayed out of pipes dragged behind the excavator and injected into makeshift storage tanks. Thousands of soldiers pushed the pallets and loaded the crushed earth from the storage basin onto a single truck, which was then transported into the factory area to be filled with new large refining furnaces.

When the TBM dug down to a depth of 10 meters, it began to dig horizontally. It excavates in circles and circles, destroying the foundation pillars it encounters one by one. Li Ruobai also went down to the underground space to scan the strength and deformation of the top layer. The foundation of the base is a one-piece design, and the whole is load-bearing, so the empty space with a diameter of more than 20 meters below does not affect anything, according to the design, the ground will only be deformed when there is a hole with a diameter of more than 50 meters.

When the underground space is large enough, a new TBM is driven into the ground and digging. This time, the two TBMs dug in different directions and carefully bypassed the pillars that needed to be retained.

It wasn't long before the third and fourth TBMs were driven underground, making the excavation much more efficient. Hundreds of engineers began to renovate the passage to the underground and then laid two transport pipes. One transports the earth ore to the surface, while the other transports the prefabricated building material elements into the ground from the ground.

As the construction of the two pipelines was completed, more engineers went underground, who first reinforced the remaining foundation pillars. The reinforcements are specially made, prefabricated profiles from base metals mixed with non-metallic materials, somewhat similar in composition to armor plates, and then wrapped in layers on the original pillars. Each of the remaining pillars ended up being one and a half times thicker, increasing the support capacity several times.

After strengthening the pillars, some engineers began to level the dome, using the pillars as the base point, laying out the supporting structure, and reinforcing the top layer. Eventually, two full layers of armor were added to the supporting structure, and the ceiling was born.

According to Li Ruobai's plan, a number of 50-meter-square spaces will be built under the base as future factory space. Although the space is not very large, there is no oversized equipment to be used at the moment, so it is enough to move all the small equipment and manufacturing machines underground.

With the completion of the first phase of underground works, the production capacity of Site 2 will be doubled.