"Alas, after all, I'm not an oceanographer," Sun Xiaoshan sighed after listening to the professional opinion of an expert sent by the Oceanic Bureau of the Special Committee, "It turns out that not only the Panama Canal, but also the ocean on both sides of the Suez Canal basically has a drop of more than 20 centimeters, which means that it can flow, and there will not be many rapids, and we have to think of other ways to prevent the sea monster from drilling into the narrow canal and causing blockage." ”

The marine expert smiled slightly to himself and thought, "Unprofessional, that's terrible!" I thought I was playing with mud. ”

"Do you have any good ideas?" Sun Xiaoshan asked shamelessly.

"We experimented," said the marine expert, "to make an underwater barrier like a horse, with rows of sharp steel pillars and other thorns, towards the exit of the canal, and the sea behemoths generally move away from these barriers." ”

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Sun Xiaoshan was on the aerial work platform, looking at the work points along the Panama Canal that were started at the same time on the big screen.

The Panama Canal is much more difficult to deal with than the Suez Canal, and even when it was first excavated, it was much more difficult than the Suez Canal.

On December 15, 1858, the Suez Canal Company (pagnie Universelledu Canal Maritime de Suez) was founded. It took almost 11 years to force the poor Egyptians to dig canals through the desert, and some of the coolies were even whipped, well, well, in fact, this is a glorified statement, and almost all of them were flogged at the time, and many died. The project overcame many technical, political and financial problems. The final cost was £18.6 million, more than double the initial budget, and the canal opened to traffic on 17 November 1869.

The Panama Canal began on January 1, 1880, and was not completed until October 10, 1913, when the then President of the United States, Woodrow Wilson, personally activated the dam gates and announced the completion of the canal. Many Native American laborers participated in the canal excavation work, and the official death toll was 5,609, but the actual number of casualties was much higher.

France spent $300 million (2 billion francs) at the beginning of the construction of the Panama Canal, and the United States added an additional $375 million, excavating a total of 259 million cubic meters of earth and rock, three and a half times the original estimate, and using 4.5 million square meters of concrete, with up to 40,000 workers working at the same time.

In the past, there were two biggest problems in digging the Panama Canal, one was mosquitoes, and the other was the terrain, and there was a bulge in the middle of the Panama Canal area.

Sun Xiaoshan doesn't have to think about the mosquito situation now, in fact, the mosquito after the end of the world has been nearly half a meter long, and there are southerners among the soldiers, who happily caught mosquitoes to make barbecue, and the people who watched it were creepy, and asked carefully, Guangzhou people.

With such a large amount of earthwork, Sun Xiaoshan did not have 33 years to excavate, and he did not have so many lives to fill in, although the main force in the construction of these two canals, except for the soldiers, was the foreigners of the basic labor brigade. Sun Xiaoshan has a large number of advanced machinery and equipment.

In fact, Sun Xiaoshan is most worried about the impact of the North American zombie group on the north side of the Panamanian Canal and the South American mutant land fauna.

There are three nuclear power plants in the south of the South American continent, and there is also a nuclear power plant in Mexico, all of which are far apart, at least more than 2,000 kilometers, which will not make Sun Xiaoshan bear the pressure of mutant nuclear zombies.

In other words, Mexico originally had a population of 112 million, while Central America included seven countries, including Guatemala, Belize, El Salvador, Honduras, Nicaragua, Costa Rica and Panama, with a population of about 25.37 million.

The above figures are the number of people alive, which is already nearly 140 million, and burial is practiced in this area.

Sun Xiaoshan can often see on the big screen that the skull-like zombies that are almost rotten all over their bodies, and even their heads are rotten and can't see the humanoid skull-like zombies swaying and running back, he always remembers the observation report of the Minister of Health Ou Fuchun, "As long as the head is not rotten, the dead corpses in the ground can become zombies and crawl out, even if they are buried in metal coffins, after all, no one uses one-meter, two-meter-thick lead skin to make coffins." ”

"One meter or two meters of lead skin," Sun Xiaoshan smiled self-deprecatingly, "Then what do you have to hate to use this as a coffin." ”

The Brazilian rainforest in South America before the end of the world, the world's largest tropical rainforest, there are many animals, after the end of the world, plants grow wildly, oxygen content increases at the same time, animal giantization is also very rapid, the unmanned aircraft and space satellites sent by the special committee show that there are many dinosaur-like animals in ancient times moving around, they fight with zombies, and other animals also fight, very busy. ,

Therefore, Sun Xiaoshan and the General Staff discussed for a long time, and decided to set up the defense line in the south to the Andes Mountains in the southern section and the Cordillera Mountains, which are parallel to the Andes Mountains.

As for the northern side, Sun Xiaoshan plans to use the soil from the excavation of the canal to build it, and then wait until the canal is dredged, and then either keep it or wash it into the sea as appropriate.

After thinking about the measures formulated again, Sun Xiaoshan felt that there were no major loopholes, and the rest would be dismantled.

He watched the transport planes come and go from the aerial work platforms at both ends of the canal to load machinery and equipment, and then fly to the designated place to unload, generally there will be a cabin with excellent protection and confidentiality performance in the equipment, for technicians to debug and operate the equipment inside, Sun Xiaoshan plans to let the machinery continue to operate underwater after digging out the water, until the predetermined depth.

If the equipment is scheduled to be installed by zombies, the transport plane will only put the equipment on top of the zombies' heads in the air, crushing the zombies into a pool of blurred flesh and blood, flowing down the ground under the equipment.

The attraction of the living is very great, the zombies have come around, but no one cares about these zombies, some technicians have completed the commissioning, sitting in the cockpit and waiting for the start of work, they are bored to look at the zombie group outside the surrounding, some are the living people after the end of the world, generally there are materials that can be called clothes on the body, and there are dead people buried before the end of the world, the image is very unsightly, when they crawl out of the ground, their heads are full of soil, and maggots crawl around on their bodies.

Sun Xiaoshan's magic weapon is the modified shield machine, the prototype of the shield boring machine integrates light, machinery, electricity, hydraulics, sensing, and information technology, and has the functions of excavating and cutting soil, conveying soil ballast, assembling tunnel lining, surveying and guiding deviation correction, etc., involving geology, civil engineering, machinery, mechanics, hydraulics, electrical, control, surveying and other disciplines and technologies, and it is necessary to carry out "tailor-made" design and manufacturing according to different geology, and the reliability requirements are extremely high.

After the modification, only the excavation and cutting of the soil body, the function of conveying the slag, the horizontal and vertical digging only 1 kilometer distance, counting the length of 500 meters of the body, only digging 500 meters, even the measurement guidance correction function is not wanted, if this is excavated again, it is not as easy as the collective jump to the Pacific Ocean.

The zombies slapped the shield machine hard, the shield machine was too high, the zombie group built a human ladder to touch the cab, and these people in the special committee all crawled out of the pile of dead people, causing trouble everywhere, and even the nuclear bomb was thrown on the head angrily, and I don't know how many times I fought with the zombie group, and I don't look at these zombies in my eyes.

The Panama Canal is well planned, with a length of about 65 kilometers from one coastline to the other, and about 82 kilometers from the deep waters of the Atlantic Ocean (or more precisely the Caribbean Sea) to the Pacific Ocean, with a width of 304 meters and a narrowest point of 152 meters.

The first step is to swing the shield machine along a 65-kilometer long line, each with a length of 500 meters and a diameter of 7 meters, anti-gravitational power, and quality assurance.

A total of 65 units were placed, according to the principle of 10% preparation of spare parts, there are 7 machines placed on the south side of the shield machine Changlong according to the density of one every 6 kilometers, the shield machine tunneling hole is directly facing the ground, and the discharge hole is hanging high towards the north, when the actual operation, they will operate separately until they dig to the butt of the shield machine in front and then turn around and dig back, digging all the way and spitting all the way, just on the north side to build a long wall of earth and stone several meters high, which can block the impact of the zombie herd - although I don't care, There are too many zombies, and it is easy to pin the gaps of the equipment with bones.

Sun Xiaoshan looked at the on-site construction video displayed on the big screen in front of him, there was a positioning module on each shield machine, and the technical personnel on board the headquarters and the shield were like hard-working little bees, coordinating with each other, digging up the Panama Canal area little by little, throwing the earth and rocks high to the north side, and the large group of zombies that could not run were buried below, and after a while, a long earthen embankment was formed, and the earthen embankment stretched out dense arms and thighs swaying desperately, which looked very infiltrating.

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Collect, recommend, and reward!