What are the historical records of earthquakes in Jinan?

1, 1347 (Yuan to Zhengqi seven years) In April, an earthquake of magnitude 4.5 occurred in Pingyin.

According to historical records, another earthquake occurred in Linzi in May, which lasted for seven days. Hedong cracked, the city fell, and the house collapsed and hurt people.

The ancient painting "Earthquake" describes a real earthquake, and the picture depicts people's various performances before and after the earthquake.

2. 1620 (forty-eight years of Wanli in Ming Dynasty), 10, 19, Jiyang earthquake with M = 5.0.

Ancient seismograph: armillary sphere.

1622 (two years from tomorrow) On April 17, an earthquake of magnitude 5.5 occurred in Changqing.

According to historical records: on March 1622 (the seventh day of February), a major earthquake occurred in Jining, and the ground in Yuncheng cracked, chickens and dogs barked and the wall houses collapsed; More than half of Juye's city wall fell, and the Confucian temple was completely broken; Li Cheng's house shook; Cao Zhou (now Heze), Chengwu (now Chengwu), Zhou Pu (now Puyang), Jinxiang and Yutai all felt the earthquake.

The earthquake affected Dong 'e, Pingyin, Dongping (now Dongping), Wenshang and Dingtao in Yanzhou, Licheng, Jiyang, Qidong, Zouping, Yangxin, Zichuan, Xintai, Liaocheng, Shenxian and Guantao in Henan, Qinghe, Jize, Feixiang and Cheng 'an in Dongchang, Luoyang and Yanshi in Guangping and An Kai in Henan.

On April 17 (the seventh day of March), another earthquake of magnitude 5.5 occurred in Licheng, Changqing, Jiyang, Linyi, Laoling, Dong 'e, chiping and Feixiang in Jinan Prefecture and Dongchang Prefecture, which lasted for three consecutive days, destroying countless houses, and also shaking in Liaocheng and Wuding Prefecture on the same day.

The above picture shows the distribution map of China volcanic seismic belt.

4. 1835 (15th year of Qing Daoguang) On June 6th, an earthquake of magnitude 5.0 occurred in Pingyin.

The victims of the Qing Dynasty were all naked.

5.1June 2, 986, the dividing line between Pingyin and Dongping was 3. 1.

A middle school in Pingyin is having an emergency drill.

6,1986 September 17, Qihe county, 3.3.

Quancheng square emergency sign.

7,1990 65438+February 23rd, Shanghe County, 3.0.

Emergency signs of Quancheng Park

8,1996 August 3 1, Qihe county, 3.0.

A middle school in Jinan conducted an emergency drill.

9.20001October 27th 165438, the junction of Shanghe and Linyi is 3.2.

Please pay attention to the emergency signs around you.

10, 2002 65438+ 10/2, Shanghe County 3.3.

Please pay attention to the emergency signs around you.

1 1,10,2003, 19, and the border between Pingyin, Changqing and Donga is 3.0.

Please pay attention to the emergency signs around you.

12,201165438+13.5 in Jiyang county on October 29th.

Chengbo Lake Park Emergency Avoidance Signs

Brief analysis of geological structure in Jinan area

Features: squeezed protection.

Stability of Jinan structure.

Jinan is located on the land in the west of Bohai Sea, and it is located in the center of an invisible basin with a diameter of about 150 km. The structure in the center of a circular basin usually has a large area of granite roots, which lays the foundation for its high geological stability.

On the east side closest to the Bohai coast, there is a small basin, which buffers the positive impact of the ocean on its rock strata.

The activity of Jinan structure.

Although the structure of the central area of Jinan is relatively stable, it is crossed by a rift zone and also by the peripheral rift zones of two medium-sized basins, almost squeezing together, narrowing the central tectonic basin of Jinan and forming a hedge relationship.

One is a basin centered on Linyi, and the other is a basin centered on Shijiazhuang.

These two basins have advantages and disadvantages for Jinan.

Beneficiaries, they can destroy the structure of the larger fault zone passing through Jinan and its vicinity and buffer its direct impact on Jinan.

Their own fault zone is not large, which will not cause hidden dangers of activities above grade 6 in Jinan.

On the other hand, as soon as any fracture zone occurs, it will conduct fluid to affect Jinan, and even exchange these effects at the hedging position.

If the influence occurs at the same time, it can also form "* * * vibration".

(e.g., as shown by the red arrow in Figure 2).

Therefore, it is inevitable that Jinan will often be disturbed by it, and geology and meteorology will react.

Generally speaking, the structure of Jinan has an active foundation below level 6.

It is a place suitable for building cities above medium scale.

However, in the specific layout of urban infrastructure projects, it is best to avoid some places with hidden fault zones (for example, as shown by dotted lines in Figure 3) and sensitive areas such as fluid inlet and outlet of fault zones (for example, as shown by arrows in Figure 3).

In addition, there are some rocks with high activity in the southeast suburb, which were formed by shock waves from the central area of Linyi Basin when the basin structure was formed or a major earthquake occurred (as shown by the small blue arc in Figure 2).

If the planning and activities in this area are improper, for example, you can't set up a village at the foot of a rolling stone.

This is more likely to lead to geological disasters such as landslides and mudslides.

If there is such a situation, we must check the migration!