1976 what caused the Tangshan earthquake?

1. Cause of Tangshan earthquake: Tangshan is located in the seismic belt around Bohai Sea, with frequent plate movements and frequent earthquakes. 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.

Two. Brief introduction of Tangshan earthquake Beijing time103: 42: 53.8 on July 28th, 976, the intensity of Tangshan and Fengnan (east longitude 1 18.2, north latitude 39.6) in China Province was 7.8 on the Richter scale (moment magnitude 7.5), and the epicenter intensity was 0.

The earthquake lasted about 12 seconds. The feeling range reached 14 provinces, municipalities and autonomous regions, among which Beijing and Tianjin were seriously affected. The energy generated by a strong earthquake is equivalent to the explosion of 400 Hiroshima atomic bombs.

The whole city of Tangshan was razed to the ground in an instant, and the city's transportation, communication, water supply and power supply were interrupted. There was no small-scale foreshock in the Tangshan earthquake, and it happened in the early hours of the morning when people were asleep, which made most people unprepared, causing 242,769 deaths and164,000 serious injuries, ranking first in the world earthquake history in the 20th century, second only to the hua county earthquake in Shaanxi (Mingjiajing Guanzhong earthquake).

Three. This paper briefly introduces the causes of serious losses caused by Tangshan earthquake.

1, happened in the middle of the night, when I was still sleeping in the dead of night.

2. The building at that time was not solid.

Tangshan is a heavy industrial city with coal as the main industry, and many areas have collapsed underground.

Extended data:

/kloc-the reconstruction in 0/0 years reshaped a city and built the walls of the soul. Simple cities have existed for 10 years. "On the anniversary of 1986 Tangshan Earthquake 10, 98% of urban residents moved into new houses, and all of them moved into new houses in 1988+00." People just lived in humble houses and started the reconstruction of Tangshan.

On May 1977 and 14, more than 3,000 experts and technicians from all over the country participated in the compilation of Tangshan city master plan, which was approved by the State Council. This scheme was later adjusted twice in 1982 and 1984. After the plan was passed, after some pilot projects, "1979 began large-scale reconstruction in the second half of the year".

Xinhua Road was already the main road in Tangshan at that time. After the earthquake, it was renamed Xinhua Road and built in sections.

It is bounded by the intersection of the urban area and Jianshe Road, west to Xinhua West Road and east to Xinhua East Road. When 1985 was finally completed, the road surface was 50 meters wide and 9.55 kilometers long, which was called "20-mile long street", also known as "Tangshan Chang 'an Street".

According to the records of Tangshan City, at most, more than 1 10000 workers from all over the country worked in Tangshan. According to incomplete statistics, more than 200 large tower cranes and more than 2,500 heavy vehicles were put into the construction site at that time.

References:

Baidu Encyclopedia-Tangshan Earthquake