Restore the middle axis of Zhengyang Bridge Ancient Monument for "physical examination"

The archaeological team is doing a "physical examination" for Zhengyang Bridge Shuqubei.

In the hutong, between the weeds, the Sluthary of Zhengyang Bridge stands in it.

Zhengyang Bridge Shuqui Monument is an important cultural relic on the central axis of Beijing. It was built in the 56th year of Qianlong in the Qing Dynasty (1791). Although the stele is inconspicuous, it is a physical testimony of the historical changes of the central axis in Beijing.

After more than 200 years of erosion, the monument of the stone monument has been blurred, and the monument body has different degrees of weather erosion. Recent Essence

Stone stele sample analysis reveals the secrets of wind and rain erosion

On the wall of the small residential courtyard at 78 Hongmiao Street, a white iron card with a "Zhengyang Bridge Shuqui" rust is rusty. Entering the courtyard, along the curved road, through the dense bungalow hut, I saw a stone monument of six or seven meters high. Under the cover of the fence and weeds, it was very inconspicuous. When it comes to this monument, the old neighborhood can say a few words. "Since the memories, the children in our courtyard love to climb up and down next to this monument." Mr. Liu, a citizen, has lived here for nearly 50 years. Later, the surrounding houses were dismantled, the soil was high, and the monument was buried below. "

Time, the grass next to it has grown one person, and this stone monument has also been eroded by wind and rain. Since it is outdoors all year round, the surface sample analysis of the stele has become a starting point for understanding and protecting cultural relics. "Considering the changing environmental factors, the protection of open -air stone cultural relics should generally consider the effects of temperature, precipitation, and environmental pollutants such as sulfides and nitride." Zhang Tao's team analyzed the annual temperature of Beijing from 2010 to the present. A number of data, combined with the on -site stone monument samples, unveiled the secrets of stone monuments being eroded by wind and rain.

After bringing the stele material sample back to the laboratory analysis, the result is a high -purity white cloud stone component, and there are almost no other impurities. Therefore, the material of the stone stele is the white jade of white clouds. There are a large number of stones and quartz on the weathered stone tendon. "White cloud stones are easily corroded by acid rain. Neither heavily crystal stones and quartz are not easy to dissolve in acid. They can be retained in the erosion of acid rain. "Zhang Tao explained.

The team also found that the surface of the stone monument also has a dark gray water rust shell. The main ingredients are plaster, which also contains a small amount of square fangs and quartz. Formation of water rust bells. "

Virtual recovery over 95%of Chinese inscriptions

Under the erosion of the wind and rain, the inscription on Zhengyang Bridge Shuqu has been blurred, and the historical appearance of the restoration of cultural relics is an important task of Zhang Tao's team. "Digital collection and virtual restoration technology helped a lot." Zhang Tao introduced that the team first used the three -dimensional laser scanner to scan the monument 360 degrees, build a three -dimensional real -life model of the stele in the computer, and then use the camera to shoot the inscriptions, enter the electronic system into the electronic system with the camera, enter the electronic system to enter the electronic system. The electronic patch generated by the inscription, "The whole process is not damaged to the stone carved cultural relics. An important means. "

Based on the three -dimensional model and electronic patch, the team extracted and identified the information of the stone monument, and also found a large number of literatures, corresponding to the content of the four libraries, and supplemented the failure part of the part. In order to restore the inscriptions as much as possible, the team also specially studied Qianlong fonts, searching for Qianlong regular script in the ancient books, pondering its handwriting outline and writing habits, corresponding to the "clues" of the inscriptions in the electronic pioneering film, and generating the virtual recovery text of the missing part of the missing part Essence "In the end, we recovered more than 95%of the inscriptions in the Chinese text. Although the Manchu part was missing compared to Chinese, it also achieved a new breakthrough in recovery."

More cultural relics are expected to "intelligent" display

After a detailed "physical examination", after finding the "disease", the cultural relics doctors also intend to use digital means to "prescribe the prescription" for the Zhengyang Bridge Shuqui Monument. "Study on diseases on the traitors of stele -engraved cultural relics, and the text on the virtual restoration of the stone monument will restore the changes in the stele in different time and space, which will provide data and technical support for protecting, repairing and using cultural relics." Zhang Tao revealed that the cultural relics department is currently studying the formulation of Zhengyang Bridge The detailed protection and utilization measures of Shuqui Monument will be used as the inheritance point on the central axis in the future to protect it with other cultural relics.

Zhang Tao's team also plans to gradually study the natural, historical and cultural conditions and disease mechanisms of the disappearance, incompleteness, and changing cultural relics on the central axis, and the virtual repairs of the inscriptions of virtual restoration. In the future, Yongdingmen North Royal Dao, Yongdingmen Gongcheng, Zhengyang Bridge and Town Beast, Xiannong Tan only altar and Ishida, Di'anmen, Qianmen Tongcheng, Daqingmen and other series of inheritance points are expected to pass intelligence through intelligence The overall display of means to help Beijing's central axis application. (Source: Beijing Daily)

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