All the newly-built buildings and bungalows in Heyuan Town were damaged, during which the walls burst and partially collapsed, including more than 200 collapsed houses 1.200, more than 2,400 seriously damaged houses and more than 7,000 damaged houses, accounting for 70% of the total, and natural damage phenomena such as ground fissures, sand blasting, small landslides and boulder rolling occurred. Guangzhou, which is about 200 kilometers away from the epicenter, and Longchuan, which is 100 kilometers away, were also damaged to varying degrees. The longest distance is 570 kilometers, including Dongshan, Xiao Yun, Wuping and Shangkeng in Fujian, Dayu, Xinfeng and Anyuan in Jiangxi. The long axis of the isoseismic line is northeast.
1962 6. 1 earthquake is the most destructive earthquake in Heyuan in recent years, causing casualties and house collapse in extreme earthquake areas. At 2: 34 on February 6, 20/kloc-0, Beijing time, an earthquake of magnitude 4.8 occurred in Dongyuan County, Heyuan City, Guangdong Province (24.0 north latitude, 1 14.5 east longitude) with a focal depth of 13 km. The epicenter was about 34 kilometers from Dongyuan County, 34 kilometers from Heyuan City and 160 kilometers from Guangzhou City. It is understood that Heyuan City, Dongguan City, Guangzhou City, Shenzhen City and Meizhou City have a sense of earthquake.
The earthquake did not cause casualties or major property losses. By 4 o'clock on June 6, 65438, there were 30 aftershocks, with the largest aftershock of 2.6, but with the passage of time, the aftershocks will gradually come down. According to the preliminary judgment, there will be no bigger earthquake in the future. Experts said that the earthquake was not induced by Xinfengjiang Reservoir, but the aftershock of this earthquake, with a magnitude of 1962+0. Just as we slowly forgot the panic caused by the 2065438+February 6, 2002 earthquake, another earthquake of magnitude 4.2 occurred in Heyuan.
On August 3, 20654381Beijing time 13: 52, an earthquake of M4.2 occurred at the junction of Yuancheng District and Dongyuan County, Heyuan City, Guangdong Province (east longitude 1 14.7 north latitude 23.8). Information from front-line staff in Heyuan City shows that no reports of casualties and property losses have been received.
According to the information released by Guangdong Seismological Network, the epicenter of this earthquake is about 25 kilometers away from the epicenter of the 4.8 earthquake on February 16, 2002, which belongs to the seismic activity on the Heyuan-Shaowu fault zone. In the past 50 years, there have been 46 earthquakes with the magnitude of1March 962 19 and 46 earthquakes with the magnitude of 4-5 in the source area of this fault zone. According to the analysis of seismic activity data and precursory observation data in Guangdong Province, this earthquake is normal, and the possibility of a bigger earthquake in this area is very small.
The Seismological Bureau of Guangdong Province immediately launched a four-level emergency response, and sent Lu Jinshui, deputy director of the Seismological Bureau of Guangdong Province, to lead the working group to take several sets of instruments to Heyuan City to guide the work and encrypt the observation.
An earthquake of magnitude 4.8 occurred in Heyuan, Guangdong Province, and Daya Bay Nuclear Power Station was not affected.
According to the Guangdong Earthquake Monitoring Center, an earthquake of magnitude 4.8 occurred in Dongyuan County, Heyuan City (23.9 degrees north latitude, 1 1 4.5 degrees east longitude) at 1 1 km yesterday morning. During the earthquake, the earthquake was felt in Guangzhou, Pearl River Delta and eastern Guangdong. As of 3 pm, no reports of casualties and property losses were received. Experts say that it is unlikely that an earthquake of magnitude 5 or above will occur in Heyuan area.
The vibration time lasts about 10 second.
"Hum, the chicken flew away and the house lost several tiles." Xiao Jincheng, a villager in Xindao Village, Dongyuan County, Heyuan City, who was located in the epicenter yesterday, said that when the earthquake occurred, he was mowing grass in the field, which was "strongly felt". Weibo netizen @ Gourmet Control 1: Posted that I felt strong shaking when sitting on a bench in my hometown Meizhou. The reporter of New Express learned that cracks appeared in the tiles of some houses in the village, but no houses collapsed or casualties were caused. Most of the villagers' houses are new reinforced concrete houses with frame structure, and the strong earthquake did not have a great impact on the houses.
After the earthquake, there was a strong earthquake in Heyuan city, and the shaking time lasted about 10 second. Guangdong province generally feels in Chaozhou in the east, Jiangmen in the west, Guangzhou-Shenzhen-Dongguan in the south and Shaoguan in the north. The Provincial Seismological Bureau immediately launched a three-level emergency response and sent a working group to the earthquake zone. It is understood that after the 4.8 earthquake, a total of 16 aftershocks were recorded.
Yesterday afternoon, the Dongyuan county government reported that it had not received any reports of casualties and property losses. Next, a new round of investigation will be conducted and some villagers will be evacuated to prevent landslides caused by the earthquake and reduce the threat of geological secondary disasters. According to China Seismological Network, an earthquake of magnitude 4.0 occurred near Dongyuan County, Heyuan City, Guangdong Province (23.9 degrees north latitude and 1 14.5 degrees east longitude) at 06: 07 on April 25th, 2004. The final result is subject to the official quick report.
25 kilometers from Xinfengjiang Reservoir
According to the Guangdong Earthquake Information Network, the epicentre of this earthquake is located about 25 kilometers northwest of Heyuan City, on the northwest edge of Xinfengjiang reservoir area, only 1 km away from the February 12 earthquake of magnitude 4.8. So, does it have anything to do with the reservoir?
Liang Gan, deputy director of the Provincial Seismological Bureau, said that after comprehensive analysis, it was preliminarily considered that the Heyuan M 4.8 earthquake was a tectonic earthquake. The earthquake that happened in the 1960s was indeed closely related to the process of reservoir impoundment. However, in the last two years, the Dongyuan M 4.8 earthquake is far away from the reservoir dam area, with a distance of 30 kilometers, which is mainly related to crustal tectonic activities. According to the analysis of existing data, it is unlikely that an earthquake of magnitude 5 or above will occur in Heyuan area.
Guangmeishan Railway is affected.
After the earthquake, the railway department immediately launched an emergency plan, organized the train to stop, and inspected the railway lines, bridges, tunnels and equipment of the Longchuan-Huizhou section of the Guangzhou-Meizhou Railway. Affected by this, more than 40 trains passing through this section were delayed to varying degrees. The station immediately strengthened passenger flow guidance and was in good order.
After the safety is confirmed, the train stopped at 13: 38 starts gradually with a speed limit of 60 km/h.
■ There are many earthquakes in this province.
After the earthquake, Huizhou, Shenzhen, Guangzhou, and even the Pearl River Delta and eastern Guangdong all felt earthquakes to varying degrees. In some places, citizens spontaneously evacuated from buildings to open spaces, so various discussions about earthquakes on the Internet became hot topics.
■ Guangzhou kindergarten evacuated children to the playground.
Yesterday morning, Gao Yue, a kindergarten teacher in a private kindergarten in Huangpu District, was giving a class to the children. When the earthquake happened, she suddenly felt the chairs in the classroom shaking. Realizing that it was an earthquake, she immediately organized the children to line up, grabbed the handrail of the stairs and walked from the stairs on the second floor to the playground in turn.
"The child is very obedient and not crowded. But they didn't understand the danger, and they walked slowly when they evacuated, which made me very anxious. " Gao Yue said that in the end, everyone was safely evacuated to the playground. After more than ten minutes, after ensuring safety, she organized the students to return indoors.
■ Shenzhen high-rise office chairs shake.
According to the staff of the Earthquake Department of the Emergency Office of the Shenzhen Municipal People's Government, yesterday's Heyuan earthquake was indeed felt in Shenzhen, especially in Nanshan District. At the same time, many netizens posted that Weibo felt the shock.
Mr. Zhu, a citizen, said in an interview that he was working on the third floor of Jingji 100/KLOC-0 in Luohu District at the time of the incident. "At that time, I felt that the chair was shaking, and then there was a feeling that people lost their center of gravity in the elevator. Some colleagues thought it was caused by subway construction outside. "
Mr. Zhu said that the process of the earthquake lasted about four or five seconds. When he looked down from the office window, he saw someone running to the open space downstairs. Almost everyone stood in the clearing and looked up at the building.
■ Spontaneous evacuation of employees of Foshan Electric Appliance Factory
A Jing, who works for an electrical appliance manufacturer in Rong Gui, Shunde, Foshan, told reporters that she was working in front of the computer in the office on the 7th floor when she suddenly felt the computer monitor shaking. Then she felt the whole building shaking twice, and someone started to get up and run out of the room. Then I heard someone shouting "earthquake!" She went downstairs with other colleagues and ran to the open space downstairs. The security guard at the company doorman didn't know what happened when he saw his colleague running out. A Jing said that after she ran downstairs, she found that there was no movement in the office building of the company headquarters across the road. "I heard that people at headquarters can't feel the earthquake."
■ Shaoguan roommates have some feelings and some have no feelings.
"It's past 1 1 in the morning, and I still stay in bed reading mobile novels." An old woman who lives in Jiaoyu Road, wengyuan county, Shaoguan City, said that she felt the house shaking, the whole bed seemed to be lifted, and then she heard the window ringing. She quickly bounced out of bed, ran out of the living room and asked loudly, is it an earthquake?
"My mother is cooking in the kitchen. When she heard it, she yelled at me, saying that I didn't get up until noon and was still yelling. She also asked me if I was dreaming. " Later, she watched the news on the Internet, only to know that there was an earthquake in Heyuan at that time.
Daya Bay Nuclear Power Station has not been affected in any way.
It is understood that the epicenter of the earthquake is about 156 km away from Daya Bay nuclear power base, and some citizens are worried that the safety of nuclear power plants will be affected. In this regard, Daya Bay Nuclear Power Operation Management Co., Ltd. reported that the earthquake had no impact on the unit.
Immediately after the earthquake, Daya Bay Nuclear Power Operation Management Co., Ltd. said in its official Weibo that yesterday's earthquake was far away from Daya Bay Nuclear Power Base, with a small magnitude, and the seismic instrument system of the base did not trigger an alarm. "The earthquake did not have any impact on six units in the base."
According to reports, in the site selection, design and construction of Daya Bay Nuclear Power Station, natural disasters are fully considered and defensive measures are taken in depth. There is no seismic activity layer with magnitude 6 or above within 20 kilometers around, so the crust is safe and stable, and the probability of strong earthquakes is low. In extreme cases, if the warning level is reached, the power station will start corresponding safety protection measures in the emergency mechanism.
"In terms of design, the seismic fortification intensity of the nuclear safety-related structures and systems of Daya Bay Nuclear Power Station and Ling 'ao Nuclear Power Station is 8 degrees, and the power stations are safe and secure. According to the China Seismological Network, at 7: 40 on March 27th, 20 16, Beijing time, an earthquake of magnitude 3.0 occurred in Yuancheng District, Heyuan City, Guangdong Province (23.76 degrees north latitude,1/4.63 degrees east longitude) with a focal depth of about 8 kilometers. The epicentre is about 8km from Heyuan city and160km from Guangzhou city. The average elevation within 30 kilometers of the epicenter is about 300 meters.