The eyes of the rest of the people at the scene also quickly fell on Zhang Ziang who was standing beside him.
Then Jiang Chenggu pondered for a moment and asked Zhang Ziang:
"Academician Zhang, do you have any suggestions for the excavation plan of Yongling Tomb?"
"..."
Zhang Ziang opened his mouth as if he wanted to say something, but in the end he gave it a softer wry smile:
"Director Jiang, how come you, a big shot from the general office, are so Party A..."
"I haven't even touched the report of the gravity gradiometer yet. How can I come up with specific suggestions without knowing the specific structure of the underground palace?"
Said.
Zhang Ziang sighed.
Jiang Chenggu:
"...."
right.
Zhang Ziang's words sound like...
Makes sense?
Engineer Ma, who had just picked up his wig, didn't know what to think when he saw this, and a trace of sympathy showed on his face.
Computers and civil engineering are two industries that are incompatible with each other and are the most common industries that encounter strange clients.
Everyone who plays the SLG game knows that building a building takes time, but those Party A always think about setting up the project today and seeing the real thing tomorrow - or the kind that can go online tomorrow night.
after awhile.
Zhang Ziang glanced at the report in Xu Yun's hand, thought for a moment, and said to Jiang Chenggu:
"Director Jiang, how about you do this?"
"Dr. Xiao Xu first assisted me in importing the measurement data of the gravity gradiometer into our system. We will analyze and discuss on the spot to see if we can come up with a preliminary plan."
"Anyway, either of the two remote sensing mapping vehicles has the ability to serve as a command vehicle - this is one of their default functions in the field."
"In addition, if we encounter any problems during the discussion, we can fly the gravity gradiometer to the sky for real-time inspection, which saves time and effort."
Jiang Chenggu pondered for a moment and nodded quickly:
"no problem."
Zhang Ziang's construction survey team is fully staffed today and is well prepared in terms of equipment. It is indeed capable of on-site analysis.
At the same time, although the location of the Ming Tombs seems to be relatively remote, with many mountains and dense forests around it, after all, it is a suburb of Yanjing, so there is no need to worry about signal transmission.
So if you encounter some difficult-to-solve problems, you can still call the design institute for support remotely.
More importantly.
It is different from the early morning when the convoy sets off.
The time at this time was approaching noon, which happened to be the peak node of Yanjing.
In addition, there are no number restrictions on vehicles in Yanjing on weekends, and the level of traffic jams is several times that of weekdays. Just now, Jiang Chenggu took the time to glance at his mobile phone and found that today's traffic index tmd was already 8.3.
Jiang Chenggu estimated that if he closed the team now, he would probably be able to have dinner when he returned to the bureau...
Therefore, instead of wasting time in traffic jams, it is better to discuss the plan on the spot.
Although most of the people at the scene are not civil engineering guys.
But as the saying goes, three cobblers are as good as one Zhuge Liang. How can they come up with any useful opinions if they can't keep it together?
So under Jiang Chenggu's instruction.
Xu Yun quickly assisted Zhang Ziang in importing the data into a system of the Academy of Engineering.
At the same time, a remote sensing vehicle on site was also expanded and acted as a command vehicle.
ten minutes later.
Data import is completed.
at the same time.
A picture board was also placed on the open ground. Although the probability of the picture board being photographed by satellite and leaking secrets was very low, Zhang Ziang and others still added a privacy grating to it.
This kind of privacy grating is different from the various privacy films on the market, and is a real privacy device:
It only allows light from the front and right side to pass through, that is, only people standing on the front and right side of the picture plate can see the image, and it will look dark from any other angle.
After a while.
Zhang Ziang got off the remote sensing vehicle, took a stack of documents to the right side of the picture board, and said to everyone:
"Everyone, as you can see, the detection results of the gravity gradiometer have been imported. Now let me introduce to you the basic information of Yongling."
Everyone hurriedly listened attentively.
Then Zhang Ziang took a deep breath and stretched out his hand to draw a circle on the top view area of the picture board:
"First of all, after our detailed measurement, the accurate width of the treasure city on the surface of Yongling is 237.5 meters, which is slightly shorter than the 81 feet recorded. It should be damaged due to weathering and flooding."
"However, Baocheng's foundation is still very solid. The rammed earth foundation area is as high as 40,000 square meters, which is roughly 200x200 in size. The average thickness of sand and gravel deep into the bottom layer is 2.31 meters."
"Underneath the rammed earth foundation is a hard foundation trench of about 1 meter, as well as a large amount of natural gravel."
Hear this.
Jiang Chenggu, Weng Tong and Tong Huaijun, three archaeological officials and experts, subconsciously nodded in unison.
As we all know.
As one of the four major ancient civilizations in the world.
The history of Chinese architecture has been influenced by Chinese culture, and it can be said that it has spread throughout ancient and modern times and spread outside the region.
Almost every aspect of every building has a large number of complex rules and procedures.
For example, the beams.
For example, eaves columns.
Another example...
foundation.
The foundations of ancient Chinese architecture are so complex that a whole course can be taught on them.
For example, the foundation of a home is called a homestead, and the foundation of a building like Yongling is called a "platform foundation."
The four sides of the platform base are generally made of masonry, with most of the inside filled with soil, and the surface also covered with masonry. It is solid and solid, and most of the shapes are relatively square.
The higher the level of the building, the more prominent and tall the platform.
Of course.
Some small households also like to use platform foundations.
However, most of the foundations of ordinary homes are made of clay to expand the lintel, which is the so-called local reputation value 10.
Therefore, the lintel wood on this kind of mud platform is also called the base mud platform lintel.
The foundations of imperial tombs such as Yongling are much more formal, and there are special requirements for how to build the specific base.
For example, the Song Dynasty compiled "Building Methods" and the Qing Dynasty compiled "Engineering Practice Rules", both of which introduced the foundation structure of the imperial tombs in detail.
Under normal circumstances.
The foundation of the imperial mausoleum will be equipped with one level of irregular step stones, which are called "steps".
Below the "stepping" is the foundation.
The material selected for this type of foundation is generally sticky or sandy soil, and the rammed foundation and "stepping" form the so-called masonry structure.
Below the masonry structure is the natural stone foundation.
That is to say, using natural rocks as the foundation trough to expand the load-bearing effect of the building is relatively much higher in terms of technical capabilities, and it is also the most critical position of the platform foundation.
Now let’s look at the structure of Yongling.
This part of the design of Yongling relatively completely followed the ancestral system of the Ming Dynasty, and did not suffer the "poisonous hands" of Jiajing.
Then Weng Tong thought about it for a moment, let out a soft "Oh", and said to Zhang Ziang:
"Lao Zhang, if I remember correctly..."
"The structure of the platform of the Jin Dynasty tomb in Xiyanchi seems to have been distributed in this way, right?"
Zhang Ziang nodded:
"That's right."
Perhaps it was because there were several laymen at the scene.
After Zhang Ziang finished answering Weng Tong's question, he introduced Academician Pan, Xu Yun and others:
"Academician Pan, the Jin tombs in Xiyanchi mentioned by the old man refer to the two Jin Dynasty tombs discovered underground in the former residence of Wang Xizhi on Xiyanchi Street in LY."
"Tomb No. 2 has been robbed in history, and few cultural relics were unearthed."
"However, Tomb No. 1 is well preserved. In 2003, more than 250 funerary objects were unearthed, including seven national first-class cultural relics."
"Wang Xizhi?"
Hearing what Zhang Ziang said, Xu Yun raised his eyebrows and asked with some uncertainty:
"Academician Zhang, is this tomb you are talking about the Jin tomb whose owner is highly suspected to be Sima Jin?"
Zhang Ziang smiled slightly and affirmed:
"Yes, that's the tomb."
Only then did Xu Yun feel enlightened.
Although he is not an expert in history, he has a good memory.
In 2016, the test results of the owner of the Xiyanchi Jin Tomb were once on the hot search, and it also triggered a debate about the so-called Chinese ‘orthodoxy’.
So Xu Yun did have some impression of this matter.
The whole story is as follows:
At that time, the archaeological team discovered a total of five corpses in two Xiyanchi Jin tombs. Among them, the three tomb owners in Tomb No. 1 were all minors, and Tomb No. 2 contained the skeletons of a man and a woman.
Among them, the test results of male adults were published in the 2016 archaeological report "LY Xiyanchi Jin Tomb":
This person may be Sima Jin, the eldest son of Langya Wu King Sima Min. After DNA testing, it was found that the chromosome belongs to the southern branch of C3-F3880 F948.
So at that time, the issue of paternal chromosomes was a hot topic, and a group of people were quarreling.
For example, the Y-chromosome haplogroup N of the Ji Zhou nobles belongs to the northern branch, while the Yin and Shang dynasties belong to the southern branch of the C line, etc...
While Xu Yun was recalling this incident, Academician Pan was obviously thinking more practically. He asked Zhang Ziang:
"In that case...Academician Zhang, does this mean that there are actually cases for reference in the excavation work of the Yongling foundation?"
"The Xiyanchi Jin Tomb was excavated in 2003. The technical means at that time could successfully dig out the foundation. It should be easier for us now, right?"
Zhang Ziang nodded slightly, but the expression on his face was still solemn:
"If you look purely at the foundation...that is, the area three to four meters below the ground, there is indeed precedent for excavation experience."
"That is to say, we have the ability to open up the upper area without causing large-scale damage to the treasure city, but..."
After Zhang Ziang finished speaking, he was silent for a moment, and then stretched out his hand again to draw on the area of the picture board:
"But according to the detection results of the gravity gradient meter, the tomb passages leading to the underground palace under the foundation... have all collapsed at this time."
Academician Pan was stunned:
"What? The tomb passage collapsed?"
Zhang Ziang nodded with a heavy face and sighed:
"Judging from the analytical results of the gradient shadow difference, it should be due to the loosening of the soil and the influx of excess water during floods, which caused the entire tomb passage to collapse beyond limit."
"This is a situation that we did not expect. After all, we had no idea about the existence of the lower copper palace before this. The pre-design of the entire soil layer was simulated according to the Dingling Underground Palace."
Zhang Ziang's words are really not excuses.
Even Xu Yun, who knew that the "Yongle Dian" was stored in Yongling, could not have guessed that the situation would be like this before the results of the gravity gradiometer came out:
Jiajing first dug a hole and buried the 'box', then filled it with soil to build the Nine Halls Underground Palace.
True.
The lower copper hall occupies a very small area. Except for the apse, the upper soil of a considerable part of the upper nine-hall underground palace has not been excavated.
But the problem is...
According to the etiquette of the Ming Dynasty, the area where the tomb passage is located must be on the right side of the apse.
That is to say, no matter how curved the tomb passage is, it will inevitably pass...at least close to the area where the ground has been broken.
Perhaps at the beginning, the soil in that area did not have much impact on the tomb passage.
But when the time span reaches the length of 460 years, those weak effects are completely different.
Coupled with the impact of floods and water flows, in a certain month and year that no one knows...
The entire tomb passage suddenly collapsed.
This way.
A question appeared in front of Zhang Ziang and others:
Even though the Nine Halls Underground Palace is 27 meters deep from the ground, the layout of the tomb passages is still winding, and the actual length may even exceed 100 meters - the length of the Dingling Tomb passage is 103 meters.
Therefore, it would be very difficult to break through such a long collapsed tomb passage.
As professional archaeological practitioners, Zhang Ziang and Weng Tong obviously know this very well.
Therefore, after Zhang Ziang introduced the situation,
The atmosphere at the scene suddenly became a little heavy.
Only...
Except Xu Yun.
I saw this outsider who knew nothing about civil engineering blinking and raising his hand in confusion:
"Um...Academician Zhang, I have a question..."
"Why do we have to go down the tomb passage when we dig the underground palace?"
Zhang Ziang glanced at him and replied without thinking:
"Of course it is to lock the entrance to the underground palace. Only by confirming the entrance to the underground palace can we determine the main body and orientation of the underground palace - this is what all previous excavation work has done."
"After all, the accuracy of remote sensing detection is limited, and what is measured and mapped is only a relatively rough topographic map, unless the underground palace can detect a large amount of mercury elements like the Mausoleum of Qin Shihuang, and accurate position judgments can be made through mercury elements."
"After all, what we pay attention to now is protective digging...Eh, wait a minute!"
As a result, I didn't finish the last word "dig".
Zhang Ziang suddenly realized something.
He suddenly turned his head and looked at the picture board, and then slapped his forehead hard:
"Damn it, why did I forget that the TMD we used this time is a gravity gradiometer!"
"With this thing here, can't we just drill the hole down?"
.......
Note:
The teacher has a funeral, and I will go back to my hometown tomorrow, so I will take a day off, and then... continue to update it every day, probably for five to six days, and then keep updating for a few days, and then continue to update it every day at the end of the month.
