This newspaper reporter is Li Jiading

At 20:00 on October 0, a 0.0 earthquake occurred in Yongqing County, Langfang, Hebei Province, with an epicenter depth of 0 kilometers, and the tremor was felt in most areas of Beijing, Tianjin and Hebei. Why are high-rise buildings more noticeable when an earthquake occurs? How to avoid risks scientifically? The reporter interviewed Li Chunlei, head of the fire and rescue detachment of Dongli District, Tianjin, and captain of the second light team of the earthquake professional team of the Tianjin Fire and Rescue Corps.

Li Chunlei explained that during an earthquake, the tremor of high-rise buildings is more obvious, firstly, because the surface waves in the seismic waves will cause the ground to move vertically and horizontally, and the displacement of the top of high-rise buildings will be amplified; Second, the natural vibration period of high-rise buildings is long, which is close to the period of some frequency bands of seismic waves, which is prone to resonance, resulting in aggravated vibration.

What are the basic evacuation principles to follow in the event of an earthquake? The first thing to do is to stay calm and judge the environment you are in. If you are indoors, give preference to small rooms (such as bathrooms) with sturdy furniture and load-bearing walls. If you are outdoors, stay away from buildings, power poles, trees, squat or lie down in an open place, and when you are in the wild, you should pay attention to landslides and landslides. The correct avoidance posture is to lie down, squat, or sit down to lower the center of gravity and protect the head and neck. If you are unfortunately trapped in the ruins, you should conserve your physical strength and use stones, metal and other objects to knock on pipes, walls, etc., making regular noises to attract the attention of rescuers.

If an earthquake occurs while you are sleeping, quickly hide next to the bed and protect your head and neck with soft objects such as pillows and quilts to avoid being hit by falling objects. If there is solid furniture next to the bed, you can also move to the side of it and take advantage of the triangle space formed by the furniture to take refuge. Do not try to rush outside during an earthquake to avoid being hit by falling objects or falling and injuring yourself in a panic, and evacuate quickly and orderly to an open area by stairs after the earthquake has temporarily stopped.

When the second light team of the earthquake professional team of the Tianjin Fire and Rescue Corps participated in the earthquake rescue mission many times, it was found that some people caused injuries to themselves due to wrong evasion. "In an earthquake rescue, some residents broke their legs and injured their heads after blindly jumping from the third floor, and they were lying on the ground unable to move, which increased the difficulty of rescue and their own pain; There were also people hiding by the window, and the glass shattered by the earthquake was scratched in many places, and one of them was cut on the neck by the glass and was in critical condition; Some residents took the elevator downstairs during the earthquake, but because the elevator suddenly lost power during operation, they were trapped in the elevator for several hours, and their spirits were greatly frightened...... "Li Chunlei said, blindly jumping off the building, hiding in the balcony or window and using the elevator, are the three major misunderstandings of indoor earthquake avoidance.

People's Daily (15/0/0 Edition 0)