Doomsday Bunker Upgrade

On the frozen lake in the Dongting Lake area, a group of engineers were drilling holes in the ice layer and buried the prepared explosives after drilling to a certain depth.

They are not trying to blow up the ice, but intend to use the shock waves generated by the explosion to conduct geological exploration of the underground and determine the location and trend of underground caves.

This is to prepare for the tunneling attack plan developed by Chen Xin.

Although Chen Xin designed this plan, he made preparations for how to defend against the destruction of shield machines and tunnels by alien creatures in underground caves, but if possible, both the military and Chen Xin hope to find out An excavation route that can circumvent those existing underground caves.

This way, on the one hand, it can save a lot of trouble. After all, if you can dig directly down to the nest of alien creatures without interference, and then attack directly, it is really very worry-free and labor-saving.

For the military, this is undoubtedly the most ideal state.

On the other hand, it is to minimize the difficulty of construction in the tunneling process.

The length of the shield machine Chen Xin prepared for this excavation task is at least 70 meters, and the diameter is more than ten meters. Cause great damage.

Therefore, planning a reasonable excavation route has become an important prerequisite for the implementation of the entire plan.

When these engineers were buried with explosives, in the original urban area, another group of engineers was cooperating with the engineers in the intense construction.

Their task is to dig a large foundation hole here for the shield machine.

Although the digging offensive does not require digging down and then hoisting the shield machine down like the subway construction, it is still necessary to dig a hole in advance to clear the starting position to facilitate the digging.

After all, the entire shield machine is tens of meters long and its weight is amazing. The excavation is digging downwards at a certain angle. It is impossible to make the tail of the entire shield machine up to the sky.

On the construction site, Chen Xin is inspecting the progress of the construction.

"The construction period is very tight, are you confident to complete the task?" Chen Xin asked the person in charge of construction on the side.

Because both the high-level and the military hope to solve the problems in the Dongting Lake area as soon as possible, they are very deadly to the schedule card.

"Please rest assured, we have divided the workers into three shifts, and we will not stop the machines 24 hours a day, and ensure that the construction of the foundation tunnel is completed within the specified time!" The person in charge seemed very confident with his rhetoric.

In fact, the person in charge is really confident in completing the construction. On the one hand, he has sufficient manpower. The military even provided some engineers to assist in the construction.

On the other hand, the construction itself is not a particularly complicated and large-scale construction, it is just digging a deep pit to complete the foundation tunnel of the shield frame.

Although the construction requirements are very strict and the construction period is very tight, it is still within a range that can be completed, but it needs to be constructed very efficiently, and there is no time to make mistakes and waste.

However, this is not too demanding. As long as there are no mistakes in the construction, the smooth completion of this task can basically be guaranteed.

Chen Xin nodded in satisfaction. Since the person in charge showed such confidence, he naturally wouldn't say much.

While construction is underway, a huge shield machine is being assembled on the side of the site.

This is the shield machine that Chen Xin obtained after the system upgrade with a finished shield machine ordered from the factory.

He had spent almost a week trying repeatedly before finally obtaining this machine that can dig up to 50 meters in a day.

This machine Chen Xin borrowed some concepts and ideas from science fiction movies that had been seen a long time ago, and made further improvements to the cutter head of the original shield machine.

In addition to improving the material and structural efficiency of the cutter head, Chen Xin also installed a directional acoustic wave transmitter on the cutter head.

This is somewhat similar to a sonic cannon. The transmitter emits ultra-high-frequency sound waves in the direction of tunneling to achieve the effect of loosening the soil and breaking the rocks and improving the efficiency of tunneling.

In fact, fifty meters a day is not the limit of this machine. According to Chen Xin’s design and simulation results, if this machine is digging at maximum power, it can dig more than one hundred meters a day at most, but in that case, follow-up The tunnel construction cannot keep up.

Therefore, after careful calculation and evaluation, Chen Xin controlled the tunneling speed at the most suitable speed of 50 meters a day.

This will not only ensure the construction of each section of tunneling, but also ensure the speed of tunneling without delaying too much time.

According to Chen Xin's estimation, the entire tunneling project needs to be digging down for a distance of about 4,000 to 5,000 meters. Because it is an oblique tunnel, the distance is several times the vertical depth.

The time he prepared for the entire plan was about nine months, and the construction period was about three to four months. The remaining time set aside was for the military's combat time.

The military has no objection to this. According to their estimates, if they can smoothly remove the maternal bodies of alien creatures used to produce combat daughters in the first wave of offensive, and cut off their manpower supply, the military is confident in three months. End the battle within.

Chen Xin was not optimistic about this. He was always worried that there are higher-level units of aliens, and it is uncertain what the underground aliens are hiding more than a thousand meters deep.

The military’s estimate of the end of the battle in three months, UU reading www. uukanshu. Com is only the result of estimation based on the existing situation.

According to Chen Xin's calculation, even if the offensive goes smoothly, it may take four to five months for the military to end the entire suppression campaign.

If there are any accidents, the entire battle will last longer.

Chen Xin has also expressed his concerns to the military, and the military has also made plans and adjustments for this, but they do not intend to modify the original timetable, and still intend to complete all the clearances within three months. Combat.

This inevitably makes Chen Xin feel a little worried whether the military is too confident.

However, the military's combat plan is very rigorous, and every aspect has left enough margin for emergencies. It has prepared a backup plan. It really doesn't look like an excess of self-confidence.

Faced with this situation, Chen Xin had no choice but to let go of his worries and focus all his energy on the implementation of this plan.

After all, it is necessary to dig to a depth of more than a thousand meters in the ground within three months, and to launch large-scale operations. There are many things that need to be considered and prepared. As the proposer of the plan, Chen Xin still has a lot of things to do. Do.