1977, Sichuan archaeologist Lin Xiang organized two teachers and four students to investigate the ancient pagodas around Chengdu. At that time, he went to the southwest slope of Guankou Town, west of Pengzhou 15km, to see the ancient pagoda. The pagoda was built from the Northern Song Dynasty to Hejiayue (1054- 1060), with a height of 34m and an upper part.

The quality of this tower project is very good. It is built with bricks, mortar and reinforced with flat iron. According to forest analysis, the ancient pagoda was obviously affected by the Longmenshan earthquake in the north, and it was inferred that the earthquake intensity was seven degrees. In addition, they also visited the longxing temple Tower outside the north gate of Pengzhou, the Baitaba Zhengjue Temple Tower 20 kilometers north of Pengzhou and the Dan Ling Baita.

Through on-the-spot investigation and literature study of four typical ancient pagodas, Lin Xiang and his students come to the conclusion that the earthquake damage of ancient buildings is directional, the rupture of ancient pagodas is north-south according to inertia, and the seismic waves come from the northwest, which is teleseismic and influenced by the Longmenshan and Xianshuihe seismic belts in the northwest. There is no earthquake in Chengdu.

Lin Xiang, an expert in Sichuan archaeology, concluded from an archaeological perspective that there was no major earthquake in Chengdu's history. "We can see where there was an earthquake in ancient times through cultural relics. Whether there will be an earthquake in Chengdu in the future can be judged based on history. Because there are earthquakes in places where earthquakes have occurred in history, and there are no earthquakes in history, the possibility of an earthquake is very small. "

Extended data

Causes of frequent earthquakes in Sichuan.

Because the Qinghai-Tibet Plateau, Sichuan and Yunnan are located at the junction of the Asia-Europe plate and the Indian Ocean plate, the Asia-Europe plate was pushed up by the Indian Ocean plate, forming the Himalayas, Hengduan Mountain and other mountains. If the stress around these mountains accumulates to a certain extent and exceeds the bearing limit of rocks, rocks will break and earthquakes will occur.

China is the country with the largest number of strong earthquakes in Chinese mainland. Judging from the distribution of major seismic zones, western Sichuan is an earthquake-prone area. There are many major seismic zones here, such as Longmenshan seismic zone, Panxi seismic zone, Songpan seismic zone and Minjiang fault zone, so it is not surprising that the frequency of strong earthquakes in Sichuan is higher than the national average. The epicenter of the Jiuzhaigou earthquake of magnitude 7.0 occurred near the Minjiang fault zone.

Wuyuan County People's Government-Why are earthquakes frequent in Sichuan?

Yang guang. Com-Expert: There was no big earthquake in Chengdu in ancient times, so the probability of it happening now is very small.