According to the Provincial Seismological Bureau statistics, the 20th century (January 1, 1901 to December 31, 2000), Shandong *** occurred more than 5 large earthquakes 10 times, of which, more than 7 times. Heze is a multi-seismic zone, *** occurred 3 times.
Two, Shandong in the history of the earthquake place is as follows:
1, August 22, 1932, the northern part of the South Yellow Sea 6.2 earthquake.
2, August 1, 1937, Heze 7 earthquake. Heze and Dongming counties were severely damaged, and almost all the houses in the extreme quake zone collapsed, causing more than 18,000 casualties.
3. On January 8, 1939, the 5.5-magnitude earthquake in Lushan. Eight people died and many were injured.
4. On May 23, 1948, a 6-magnitude earthquake struck northwest of Weihai.
5. On May 29, 1948, a 5.5-magnitude earthquake in Heze.
6. July 18, 1969, Bohai 7.4-magnitude earthquake. The hardest-hit area was Huimin district, causing 9 deaths and 353 injuries.
7. November 7, 1983, Heze 5.9 magnitude earthquake. The intensity was seven degrees strong.
8. On January 23, 1992, a 5.3-magnitude earthquake struck the northern part of the South Yellow Sea.
9, September 20, 1995, Cangshan 5.2 magnitude earthquake.
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Related knowledge about prevention of aftershocks:
1, strong Aftershocks are the focus of prevention?
Because of the Earth's constant movement and change, gradually accumulated a huge amount of energy in certain vulnerable areas of the earth's crust, resulting in a sudden rupture of the rock layer or triggered the original fault fault fault, that is, the occurrence of earthquakes. The full release of energy needs a process, after the main shock there are generally aftershocks occur, but aftershocks are also strong and weak, relatively small aftershocks can only cause slight ground shaking, not easy to trigger disasters, while strong aftershocks are likely to trigger further damage to damaged buildings or collapse, resulting in new casualties. Therefore, the prediction and prevention of strong aftershocks is a priority.
2. The key to preventing strong aftershocks in mountainous areas
The key to preventing strong aftershocks in different types of areas is different. 5.12 Wenchuan earthquake occurred in mountainous areas, and the key to preventing it is as follows:
Firstly, it is to prevent the occurrence of secondary disasters. There are a large number of landslides, avalanches, rolling stones, weirs, reservoirs and other potential hazards in the area, coupled with the continuous rainfall in the disaster area in recent days, once a strong aftershock occurs, these hazards are likely to trigger traffic jams, flooding and new casualties, and precautionary measures must be taken as early as possible.
The second is to guard against further damage to houses and injuries. The location of the house and the degree of damage is different, should take different precautions. Located on the landslide body or located below the landslide body of the house is very vulnerable to major damage, do not live; has been seriously damaged but not collapsed houses do not live.
Thirdly, different precautions should be taken for bungalows and buildings. Houses that have not been damaged, are lightly damaged and are far from the source of secondary secondary disasters can be occupied, but precautions should be taken.
People living in the bungalow, to open the doors and windows, be vigilant, feel the ground shaking in time to escape from the house; people living in the building, to be prepared in advance, if an earthquake do not take the jump, take the elevator and other seismic behaviors, emergency crouching under the bed, a small span of room in the house or crouching in the middle of the two tables in the narrow space to be the quake and then quickly evacuate.
3, all levels of government to raise awareness of earthquake prevention
Leaders at all levels to raise awareness of the hazards of earthquakes and strong aftershocks, to be able to correctly identify the earthquake rumors and earthquake information, to guide the masses and the unit of the personnel to effectively avoid earthquakes and stabilize the community; to strengthen the training for teachers and students in schools, to enhance the awareness of the teachers and students to avoid aftershocks and skills, to facilitate the occurrence of strong aftershocks when the earthquake avoidance is organized to Reduce casualties.
4, guiding the public to consciously grasp the knowledge of earthquake prevention
Earthquake prevention and avoidance knowledge is very rich, including the basic knowledge of earthquakes, correctly identify the knowledge of earthquake rumors, knowledge of various conditions to avoid earthquakes, the knowledge of self-rescue under the conditions of injuries, and knowledge of mutual rescue. First, we must strengthen the publicity of science, guide the public to consciously and actively grasp;
The second is to guide the family to prepare an emergency plan, carry out family emergency shelter, evacuation and evacuation drill activities; Third, we must carry out a variety of conditions of emergency shelter drills.
5. Strengthening precautionary measures
Prepare plans in advance for disasters that may be caused by strong aftershocks. The earthquake department should strengthen the forecast of strong aftershocks and inform all departments in time to do a good job in response. Once there is a strong aftershock forecast, each unit will immediately activate the plan and take measures.
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