"Boss, the bidder has been confirmed, and this is the design document of the bidder. Lian Qing got up and replied, handing a thick folder to Shi Lin by the way.

The airport bidding is the work arranged by Shilin some time ago, and Lian Qing and Guo Jie are mainly responsible for the bidding work.

Shi Lin opened the bidding documents and asked about the specific design of the airport while looking at them.

The name of the airport is "Aixin Village International Airport", and due to noise pollution, the airport will be far away from the urban economic circle, and it will generally be about 30 kilometers away from the central district of the city.

Aixin Village International Airport is located 50 kilometers southeast of Aixin Village and about 25 kilometers away from the entrance of the scenic spot.

The first phase of the airport will be completed in 2021, with a construction period of three years and 10 months, covering an area of 2,800 hectares, with a designed annual passenger capacity of 40 million passengers, 700,000 tons of cargo throughput and 320,000 aircraft takeoffs and landings.

Three new runways were built, with a flight area level of 4F and a total of 202 stands. The long-term project will build a total of 6 runways, with a total area of 1.51 million square meters of terminals, to meet the annual passenger throughput of 70 million passengers.

"Mr. Lian, what does 4F mean?" Shi Lin asked when he saw the general introduction of the airport project and saw something he didn't understand.

Not only Shi Lin didn't understand, but most of the people in the conference room didn't understand what 4F meant, even if they often flew by plane.

Lian Qing replied respectfully: "Boss, 4F refers to the runway level, and the flight area level is represented by numbers + letters, the first part is a number, indicating the length of the runway, and "4" means that the runway is more than 1800 meters.

The second part is the letters, which indicate the wingspan and track of the aircraft that can take off and land, and the further back from A to F is larger. A 4F-class airport, which stands for a variety of large aircraft that can take off and land.

The 4th floor is also the largest runway. The runway width is between 65 meters and 80 meters, which can meet the take-off and landing requirements of large aircraft such as Airbus A380 (560 tons) and Boeing 747. ”

"Oh, I see. Shi Lin nodded while listening, it didn't seem to be complicated, and pointed to the data in the first place of the document and asked, "I think our runway here is 4,500 long, is it necessary to make it that long?" ”

"That's how long the runway is!"

Lian Qing smiled, it is normal for ordinary people not to understand, and replied: "That's the case, the length of the runway is mainly limited by the take-off length of the aircraft, generally speaking, the lower the air pressure, the longer the length required, of course, it is also related to the level of the airport, the higher the level, the longer the airport runway."

The altitude of Aixin Village is relatively high, and the planned airport is about 1,500 meters above sea level, and the air is relatively thin, resulting in a reduction in the lift of the aircraft and the power of the engine, so the runway of the airport in these places needs to be more than 4,000 meters long.

In the tropics, because the temperature is high, the lift of the aircraft decreases, so the runway should also be built longer. Rongcheng Airport is in the basin area, with a low altitude, like a 4F runway, and the runway length of about 3400 meters is enough. ”

"The airstrip should be very expensive, or everyone will build a few more. I see that there are only two 4F runways at Rongcheng Airport. ”

Shi Lin asked again, a little surprised by the runway, the cost should be very expensive, the 8-lane highway costs one or two hundred million per kilometer, the 4F airstrip is wider than the 8-lane, and the strength level is larger than the general highway, after all, the large plane is hundreds of tons, and some highways also restrict the passage of large-tonnage vehicles.

Lian Qing nodded and patiently explained: "Well, for an airport, generally speaking, the investment in runway construction accounts for half of the investment in the entire airport.

The standards of large airports are higher than those of highways, which is related to the tonnage of aircraft.

In order to prevent pavement damage, the runway design will generally adopt an overly conservative design, and the thickness of the pavement slab can reach 45 cm or even 50 cm. Like the 4F runway, the cost is higher than the highway.

Of course, there will also be big problems, such as the runway cracking under the impact of high-temperature heat flow, and the problem of broken plates under fatigue. It's just too thick...... The cost is not cheap. ”

"Mr. Lian, how much does our airstrip cost? Surely it's not cheap?" one of the executives was curious, and the others also had the same questions.

Lian Qing is very familiar with the bidding documents, and he is also an insider, so he replied fluently: "Our cheaper is mainly because the land acquisition is cheap, it can be said that it does not cost anything, 4F level, 65 meters wide, 4500 meters long runway, the cost of each runway is estimated to be 2 billion RMB."

Like the imperial capital and the new airport in Hong Kong, land acquisition is too expensive, tens of thousands of acres of land for an airport, with a total investment of more than 50 billion.

The most expensive airport is in Hong Kong New Airport, due to the reclamation of the sea, the total investment is 120 billion Hong Kong dollars, which is 100 billion RMB.

Rongcheng also has a new airport investment, but also 3 4F runways, about 12 billion investment, although our airport land acquisition is cheap, but because it is far away from the city, transportation is inconvenient, and it is a plateau mountainous area, there are still more peaks to be pushed off, the amount of excavation work is also large, almost the supporting facilities, the main project of the airport, but also to invest 15 billion RMB. ”

"Oh my God! It's so expensive! Those airports cost tens of billions of dollars!" exclaimed the less knowledgeable lady.

Lian Qing nodded and explained: "For example, the Imperial Capital Airport has 3 parallel runways, Haicheng Hongqiao has 2 parallel runways, and the planning of Haicheng Pudong International Airport is 5 parallel runways, which is already very luxurious."

In fact, we planned three 4F airport runways, and those experts felt that it was too extravagant, and they were also suspicious of our passenger flow, which was just a scenic spot. ”

Shi Lin smiled, he was confident in his tourist attractions, and the company's data analysis team had also analyzed it, which was more reasonable.

Shi Lin said: "The passenger flow of 40 million people is really not much, the average is only 100,000 people per day, I estimate that it is not enough."

However, after the first phase is built, it will take three or four years to put it into use, which is relatively fast.

I checked the information, and Atlanta International Airport, the world's largest airport, carried 95 million passengers last year.

Perhaps, if the development of our Aixin Village International Airport is good, when the second and third phases of the tourist attractions are developed, it is very likely to become the world's largest passenger flow airport, so in the next few years, the airport may expand several times. ”

In addition to the airport, the airport to the entrance of the scenic spot is about 25 kilometers, and it is necessary to build a six-channel expressway and build EMU traffic.

The supporting highway and bullet train track are also part of the Aixin Village International Airport project, and the investment can be quite large.