The Gyeongcang Expressway is a provincial-level highway that runs through the east and west of Southern Province, connecting Gyeongju and Cangzhou. The project was approved in 2013, the engineering feasibility study was completed in 2015, the survey and design was completed in March 2018, the project bidding was carried out from May to October 2018, and the construction of some road sections began in June.

The highway is a two-way four-lane highway with a design maximum speed of 120 km/h.

Among them, there is an extra-long tunnel that is difficult to construct, and the bid for the Ganhaizi Tunnel was opened on October 11. The tunnel is 4415 meters long, the surrounding rock is mostly third-grade, some are first-class and second-grade, there are many intermediate geological fault zones and tectonic fracture zones, rock fragmentation and fracture development, and a total of 25 tectonic fracture zones and jointed fracture dense zones are developed.

The tunnel is about 30 kilometers away from the urban area of Gyeongju, and the bidding period is 22 months, and the bidding price limit is 460 million yuan.

The tunnel was finally won by Shengshi Technology with an ultra-short construction period and ultra-low quotation, and the construction period quoted by Shengshi Technology was 5 months, and the quotation was only 4.8 million Chinese yuan.

After Shengshi Technology won the bid, because the preliminary work has been completed, after Shengshi Technology reviewed the project baseline and elevation, and promised that the main materials and construction machinery and equipment have been implemented, the chief engineer of the Qingcang Expressway Supervision Unit issued a commencement order on October 28.

Originally, a commencement order could only be issued after materials, personnel, and machinery had entered the site and the conditions for construction were met. However, it is not normal for Shengshi Technology to win the bid, and the industry is rumoring that Shengshi Technology has won the bid everywhere because someone from above takes care of it. And due to the low price and short construction period of the winning bid, it seems impossible to complete the construction of this tunnel in such a short time and at such a low cost.

In addition, the construction organization design submitted by Shengshi Technology is not compiled, and such a large tunnel project is only two pages. Nothing is written, only a few nouns, and there are no details of the construction process at all. There are only three rough construction plans, and there are four construction preparations. The whole construction organization design, there is no reinforcement support, neither the advanced pipe shed of the crushing belt, the small conduit and other reinforcement measures, nor the support measures. There is not even a human resources plan, let alone a construction machinery investment plan. Safety technical measures, security measures, emergency plans, etc., are not all available.

Those terms have never been seen by the chief engineer who has been working on the project for decades. What the hell is a membrane? What is modulation? What kind of mess is seal modulation and load-bearing layer modulation, the modem knows. What is it that has been unearthed? Unearthed artifacts? What is soil? Planting trees?

The supervising engineer asked the project leader of Shengshi Technology about several questions about the construction organization design, but the person's answer was also misty. I couldn't understand how their tunnel was going to be built.

Everything in Shengshi Technology is weird, and people can't understand it at all. Therefore, after the people of Shengshi Technology applied for the issuance of a commencement order for the second time, the chief engineer also issued a commencement order, which was tossed by them.

But after Shengshi Technology received the start order, no personnel entered the site, and nothing was in place for materials and construction machinery.

In a blink of an eye, it was late November, and only four people from Shengshi Technology saw by the supervising engineer in charge of the tunnel section who had appeared on the project site. They don't pay attention to the project and don't do anything at the tunnel. But in the nearby valley, Shengshi Technology was seen using a flying machine to lift some huge things like large cans on cement tankers from the air and stand on the ground.

The supervising engineer inquired and got a reply that Shengshi was building a pipeline from Gyeongju to Ganhaeja for tunnel construction. This pipeline is the main work of construction preparation, in order to speed up the construction of the pipeline, they adopted a sectional construction method, so some materials were lifted.

The supervising engineer reported Shengshi's reply to the supervising engineer, and the director didn't understand, what kind of mess was this, what kind of relationship could the pipeline and the tunnel have, just fool people.

If you don't understand, you don't care about him, the director thinks it's better not to let Sheng Shi go around, and he can't follow them blindly. No matter what they do, as long as they can start construction on time and repair the tunnel within the specified construction period. If they can't start construction on time, and they can't advance according to their own project schedule, then they will act according to the contract, and they will be punished and punished, and they should terminate the contract, and they don't need to be polite to Shengshi.

November 27 is the day when the main tunnel project in the construction organization design of Shengshi Technology started, so the chief engineer of Qingcang Expressway with two supervisors came to the starting point of the Ganhaizi Tunnel Project at 15 o'clock in the afternoon to check the start of Shengshi Technology.

When I arrived at the place, it was still deserted, and there was only one person who was often on duty here.

However, there are still some changes on the construction site, the most obvious is that there are four huge cylindrical containers erected next to the tunnel mouth. One of them is slightly smaller, two are larger, and one is larger than the other three combined.

The entrance of the tunnel was blocked by Shengshi Technology with concrete materials, and I don't know what to do.

Those containers have pipes that come out of the ground and connect to them. It should be the pipeline that Shengshi Technology took over from Gyeongju. There are many other pipes connected to the container.

On each of the three smaller containers, there is a main pipe connected to the two tunnels, and then several pipes are connected to the concrete enclosure, thick and thin.

The smallest container is connected to the hose, the pipe is the thinnest, the diameter is only about one centimeter, and the most, divided into two layers to connect to the concrete closed surface, look at the shape of the arrangement, it should be arranged according to the shape of the tunnel section.

In the middle of the two thinnest hoses, there is a layer of pipes connected by two larger vessels, and the two pipes are grouped in pairs, one up and one down, and the whole section is connected to about 30 groups in total. There are two kinds of pipes, thin at the top and thick at the bottom, the thick one is about 40 centimeters in diameter, and the thin one is about 20 centimeters in diameter.

In the middle of the tunnel, where the empty car should be, followed by the thickest pipe, which should be 2.5 meters in diameter. The thick pipe was connected to the largest container, and on the other side of the large container, two pipes of the same thickness were connected, all the way to a nearby valley. I can't see if the back is still laid forward.

Next to those pipes, there are countless cables.

The supervising engineer looks like this, it really doesn't look like a tunnel excavation. He felt that no matter what kind of tunneling technology, it could not be like this, this is digging tunnels, not doing water diversion projects.

The supervising engineer looked at the strangeness from a distance and walked towards the only employee of Shengshi Technology on the site.

When the employees of the prosperous world saw the supervisor coming, they also greeted them and greeted them from afar.

The director was too lazy to be polite, and asked directly with a cold face: "What about you?" Didn't you say that the construction officially started today? People are people, machines are machines, how to start? What are these for? ”

As he spoke, the chief engineer pointed his finger around the containers, pipes, concrete covers, and other things he couldn't understand.

The Shengshi employee wondered: "Am I not human? ”

The director is angry, isn't this a change of concept, I asked where your construction personnel are, and you asked me if you are not human.

"I'm talking about your construction crew!" The superintendent was furious.

"I am!"

The director was speechless again, two tunnels with such a large section, do you just do it alone? It's really difficult to communicate with people in the prosperous world, and I just can't understand people!

"You're a fart!" The director couldn't help but even get the dirty words out.

"This excavation face of this tunnel, no accident, I am alone, and the other end of the tunnel is also a person at normal times!" The employees of the prosperous world are also very helpless, the old comrades just have no ability to accept it, and they all said that I am alone, why can't I accept it.

The superintendent couldn't, so he had to change the question: "When are you going to start digging the tunnel?" ”

"Didn't I tell you about today? All the preparatory work was completed yesterday, and the construction of the main project began early this morning. ”

The director continued to be speechless, and shook those things with his right index finger for a long time, and finally asked with difficulty: "Are you guys digging tunnels?" ”

"Uh-huh!" Shengshi employees nodded, "We started to build the film today, day and night, and completed the film construction in 28 days." ”

"Tell me all day about building a film, what the hell do you mean by building a film?" The supervising engineer frowned, and returned to the jumbled words he had never heard before.

"Hey, didn't our team leader say that he had already explained it to you? He didn't explain it clearly. Shengshi employee asked rhetorically.

The eyebrows on both sides of the supervising engineer are about to squeeze together, do you want me to tell you that I have no way to accept or understand his explanation?

"Membrane building, as the name suggests, is to build a membrane, a very thin membrane." The Shengshi employee saw that the director didn't speak, so he had to explain again: "When we dig a tunnel, the first thing we need to do is to build a membrane to separate the soil or rock layer along the cross-sectional shape. Then, according to the soil conditions, it can be modulated, and if it cannot be modulated, it will be replaced. After the waterproof layer and load-bearing layer are done, and then unearthed, the soil and stone are broken and transported out, isn't the tunnel ready? ”

It is similar to what the team leader said in the mouth of Shengshi employees, it is very simple and clear. But it's too simple to accept. The supervising engineer still can't understand what the membrane construction has to do with tunnel construction. Why is this prosperous tunnel construction method so strange?

"Can you open it and let us see?" The chief engineer looked at the two subordinates and was also at a loss, admitting that he couldn't understand: "We don't understand what you are talking about building the film, maybe we can understand it by looking at it." ”

The Shengshi employee said: "I can't see it, isn't this all sealed!" I'll make an animated video and send it to you later, and you'll understand. To put it bluntly, membrane building is actually the same as using a blade or other thin thing to insert something with gaps, except that we use a very thin film to insert it into a rock formation that does not necessarily have gaps. ”

Then he looked at the enclosed mountain: "If the insertion is thin enough, there is a lot of space in the atom, right?" ”

The chief engineer and his party of three came once, but they didn't understand anything, and went home again. But the director doesn't matter, as long as Shengshi can complete the construction of the tunnel project on time and according to the quality requirements without accidents, that's fine, that's the fundamental. It doesn't matter if you understand it or not.