1976 what caused the Tangshan earthquake?

1At 3: 42: 54 on July 28th, 976, a strong earthquake of magnitude 7.8 occurred in Tangshan and Fengnan areas of Hebei Province (east longitude 1 18.0 degrees, north latitude 39.4 degrees), with the epicenter intensity of 1 1 degree. The earthquake affected Tianjin and Beijing. The earthquake happened in a city with concentrated industrial and mining enterprises and dense population. Most of the industrial and mining facilities in the earthquake zone were destroyed, mainly manifested in the collapse of the roof of the factory building, most of the retaining walls, and almost all high-rise buildings and ordinary houses. Railway subgrade subsidence and rail bending deformation generally occur in the earthquake zone; Highway pavement cracking; Pier dislocation, dumping, beam movement and falling, etc. But the damage of underground mines is much lighter than that of ground buildings.

1On July 28th, 976, a strong earthquake of magnitude 7.8 occurred in Tangshan and Fengnan, Hebei Province. The Youth Palace on Tangshan Cultural Road is a two-story building with brick-concrete structure. One floor collapsed in the earthquake of magnitude 7.8, and all but four doorposts collapsed in the earthquake of magnitude 7. 1.

1On July 28th, 976, a strong earthquake of magnitude 7.8 occurred in Tangshan and Fengnan, Hebei Province. Kailuan Coal Mine Hospital is a five-story building with brick-concrete structure (seven floors in some areas), and only the west corner is reserved.

1On July 28th, 976, a strong earthquake of magnitude 7.8 occurred in Tangshan and Fengnan, Hebei Province. Tangshan Hebei Coal Mine Design Institute, brick-concrete building collapsed partially.

Tangshan is an industrial city in North China of China with a population of more than 6 million. 1On July 28th, 976, a major earthquake occurred in the city and its surrounding areas. The earth shook violently, even the buildings in the capital Beijing, which is 160 kilometers away, were shaking. This is the most disastrous earthquake in China in recent 30 years.

Among many miraculous survivors, a woman escaped from her hotel in just 2 seconds, and the hotel broke in two and collapsed. Fearing that there would be a bigger earthquake, most Tangshan people moved to tents built on roads outside the city as temporary shelters.

The exact number of people killed in the earthquake may always be a mystery. The official death toll is 142000, but some western experts think this figure may be much higher. In terms of death toll, Tangshan earthquake may be the second most destructive earthquake in China. According to relevant data in China, an earthquake of magnitude 7.8 occurred in Tangshan City, Hebei Province at 3: 42: 56 on July 28th, 1976. The earthquake killed more than 242,000 people and seriously injured more than164,000 people. -translation notes)

Earthquakes are caused by the movement of the plates that make up the earth's crust. Plate movements mostly occur in the eastern and western edges of the Pacific Ocean, which explains why China, Japan and the west coast of South and North America are so vulnerable to earthquakes.

The destruction of this coastal railway line shows the destructive power of the Tangshan earthquake.