is sleeping again! Whether it was the previous Tangshan earthquake or the Wenchuan earthquake, one night or the other day, the strong earthquake always seemed to like to come when we were sleeping. This is when I am sleeping again. According to the official determination by China Earthquake Network, at 4:33 am on September 16, Beijing time, a magnitude 6.0 earthquake occurred in Lu County, Luzhou City, Sichuan. The earthquake center is located at 29.20 degrees north latitude and 105.34 degrees east longitude, with a depth of 10 kilometers. There is a strong tremor in other cities in Sichuan, including Chengdu, Chongqing, Leshan and Zigong .
As of the latest rescue news to September 16, the earthquake accident has caused 2 deaths, 3 serious injuries and 57 minor injuries. Experts also said that the aftershocks in Lu County will continue for a period of time in the future and will not end there. After the accident, CCTV broadcast live on Luzhou County, Luzhou, and was deeply concerned about the lives and safety of local people and the latest rescue situation on the scene. The earthquake in Lu County, Luzhou caught people off guard, but the incident has happened, and experts said: With the aftershocks still going on, do you really understand how to escape during an earthquake? What is an earthquake in
? The current situation of earthquakes in our country and what harms will it bring?
earthquake, also known as earth motion, is a vibration caused by the rapid release of energy in the earth's crust. During the natural phenomenon of earthquakes, a kind of seismic wave will be generated, and there will also be extreme earthquake zone , which is the epicenter. This is often the place that is most affected by earthquakes. As far as globally, there are about 5 million earthquakes on the earth every year, which means there are tens of thousands of earthquakes every day. The reason for the earthquake's changes is now recognized as the movement between plates on the earth.
As for my country, according to relevant data statistics, my country has experienced more than 800 earthquakes of magnitude 6 or above since the 20th century. Overall, it shows several major characteristics of many times, large intensity, wide distribution, shallow source and sudden bursts. Earthquakes themselves are not fatal, but the collapse of buildings, landslides, dams, , heavy rain, etc. they produce will really be fatal. Fortunately, with the development of technology, the earthquake early warning mechanism in my country and even the whole world is relatively complete. From the initial early warning few seconds, it can achieve dozens of seconds ahead of time. For low-level residents, this is the escape time of gold.
Is there any correlation between the 6.0 magnitude earthquake in Lu County, Sichuan and the 2008 Wenchuan super earthquake?
As we all know, due to the influence of seismic plates, the southwest region of my country is in the same seismic zone in terms of geographical location. After the earthquake on May 12, 2008, scientists clearly detected that the stress field of the earthquake in my country had significantly changed, which led to a series of changes in the northern and southernmost end of the Longmen Mountain Fault, the southernmost end of the Xianshuihe Fault, the Dongkunlun Fault, the Longxian - Baoji Fault, the Riyue Mountain Fault and other changes.
In addition, the Wenchuan earthquake also caused many previous aftershocks. According to relevant statistics, as of May 6, 2011, a total of 86,403 aftershocks were recorded. Even the magnitude 4.8 earthquake that occurred again in Wenchuan County in July 2021 was a aftershock of the Wenchuan earthquake in 2008. In addition, there have been many minor earthquakes such as Chengdu, , Ya'an, , etc., and the explanation given by experts is also that it is the aftershock of the Wenchuan earthquake in 2008. So what about the Luzhou Lu County earthquake this time?
0 At 7:30 am on September 16, Sichuan Provincial Earthquake Bureau held a press conference in Luzhou Lu County. senior engineer Zhang Zhiwei gave an answer to this question. Zhang Zhiwei introduced that the previous Lushan earthquake and Wenchuan earthquake were indeed in the Longmenshan fault zone, but the Lu County earthquake belonged to the Huayingshan fault zone of Sichuan Basin. The two are very far apart, and the fault zone belongs to different structures, so the correlation is not very large.
How should high-rise residents escape when the earthquake occurs?
If earthquake warnings can actively seek out gold escape time for residents, the ones who benefit the most are the ones who benefit from it. Indeed, because they have low floors or live in low floors in high-rise buildings, they can indeed run out after these dozens of seconds. But what about residents on high-rise floors? When an earthquake occurs, should we run up or down? Is the safest floor the first floor or the safest floor the top floor?
First of all, one thing you need to understand is that because you are in the high-level, the warning time of dozens of seconds is definitely not enough to escape, and you cannot rely on manpower to run to the first floor and then find a safe and open space. So how should we escape when an earthquake occurs? In fact, when the earthquake occurs, due to the principle of earthquakes and the characteristics of buildings collapse, the bottom floor is actually more likely to be damaged than the high-rise buildings. Using a slender pole to simulate will find that when we sway back and forth, the top of the pole will be larger, but the force will be less, while the bottom will be the opposite. Therefore, when designing a building, this factor will also be taken into account to reinforce the ground floor.
But this does not mean that the high-level is safer. This needs to be considered in two aspects. First of all, if the building collapses directly, the high-rise and the bottom-rise are basically the same dangerous. Second, if a collapse really occurs, the upper floor will have greater swing amplitude, and the fall of gravel will bring greater danger. In contrast, since the top is at the top, it may be easier to be excavated and rescued in Golden Rescue Time during rescue.
Therefore, if an earthquake occurs, do not choose between running up or down. Because neither the top floor nor the first floor is the safest place, the best thing is to seize the time to avoid danger nearby. Hiding in a bathroom and other areas that are closed and narrow and close to the water pipes can form a stable triangular space. In this way, even if a collapse occurs, I can use the triangular structure to protect myself to the greatest extent, avoid falling rocks and hurting, and gain a greater probability of being successfully searched and rescued later.
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