An earthquake with a magnitude of only 4.3 occurred in Fuyang, Anhui Province, but more than 4,000 houses collapsed overnight, more than 6,000 houses were damaged, 2 people were killed and 13 people w

An earthquake with a magnitude of only 4.3 occurred in Fuyang, Anhui Province, but more than 4,000 houses collapsed overnight, more than 6,000 houses were damaged, 2 people were killed and 13 people were injured. On March 20th,15, 14 and 13, an earthquake of magnitude 4.3 occurred in Yingquan District, Fuyang City, Anhui Province (east longitude15.9 degrees, north latitude 33 degrees) with a focal depth of 10 km.

According to the reporter's understanding, after the earthquake, there were obvious earthquakes in Linquan County, Taihe County and jieshou city in Fuyang City, Anhui Province. As of 2 14 March, there were 415,000 people affected by the earthquake and 4 155 houses collapsed, with 4 152 rooms seriously damaged and 6,927 rooms generally damaged. Casualties 15, of which 2 died after being rescued. Communication, water supply, power supply and transportation facilities are not damaged.

At present, Fuyang City has launched a four-level response to the Fuyang earthquake emergency plan. According to the consultation analysis of the Seismological Bureau of the province, it is considered that it is unlikely that a bigger earthquake will occur near the earthquake zone in the near future.

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It didn't collapse so much.

Many people ask why a 4.3-magnitude earthquake occurred in Fuyang, not in the traditional earthquake zone. In response to this question, Wang Xingzhou, director of the Anhui Earthquake Prediction Research Center, told the reporter that the epicenter was located in the northeast corner of the intersection of the east-west Linquan-Liu Fu fault and the northeast Wang Laoji fault, which is a normal phenomenon.

According to its introduction, there is no historical record of earthquakes in Fuyang area in history. "The earliest earthquake records can be traced back to 1644. The latest earthquake occurred in Lixin county of 1999, which is more than kilometers away from 10. There have even been two earthquakes of magnitude 6 or above near Fuyang 100 km. "

Regarding the death caused by a small earthquake with a magnitude of 4.3, Director Wang said that this phenomenon is not uncommon. "For example, the 20 12 Jiangsu Gaoyou M 4.9 earthquake also caused casualties."

According to Director Wang, the casualties caused by the earthquake are caused by many factors, such as the poor quality of some houses, the characteristics of earthquakes, and the unskilled application of hedging knowledge.

"In housing construction, seismic design is very important. Whether there are ground beams on the foundation of the house, whether the columns are reinforced concrete, the ring beams on the roof and the structure of the floor all have an impact on the seismic performance of the house. " Wang Xingzhou said, "However, in the vast rural areas, these designs were not considered when building houses due to reasons such as funds and building habits. This has buried many hidden dangers of earthquakes. "

Wang Xingzhou said that many people don't pay enough attention to the knowledge of earthquake prevention on weekdays, which leads to people's panic during the earthquake, and to some extent, it increases casualties.

When talking about the large-scale house damage caused by small-scale earthquakes, Wang Xingzhou explained that the degree of earthquake damage is not linear with the magnitude. "The comprehensive determination of factors such as magnitude, focal depth, earthquake type and surface coverage requires collective analysis of specific situations."

"The focal depth is shallow and the destructive power will be greater. However, if the local surface coverage is thick, the attenuation of seismic energy will be relatively large, which will weaken the impact of the earthquake. "

When talking about the comments circulating on the Internet that there will be a major earthquake in Fuyang, Wang Xingzhou made it clear that "the rumors are not credible."

According to its introduction, the earthquake was an isolated earthquake. After this type of earthquake, there are few earthquakes, and even many will not have subsequent aftershocks. According to the analysis of observation data, there is probably no earthquake in Fuyang after the earthquake.

Wang Xingzhou told the reporter that since the Wenchuan earthquake in 2008, the earthquake activity in Chinese mainland has entered a relatively frequent period, and there have been many earthquakes of magnitude 3 and 4 in Anhui in recent years, but these are normal plate movements, so it cannot be inferred that a major earthquake will occur.