Specifically, it is the Jinyintan grassland in haiyan county, Haibei Tibetan Autonomous Prefecture, Qinghai Province.
In the 1960s, a group of scientific and technical personnel came here anonymously, which was then called the State-owned 22 1 Factory, Qinghai Mining Area. Through hard work, China successfully developed the first atomic bomb and the first hydrogen bomb, and produced various types of strategic nuclear weapons.
1987, the military restricted area closed for more than 30 years completed the historical mission entrusted by the times, and the central government made a decision to cancel the base. 1993 base was handed over to the local government after it was retired. Qinghai Province named it Xihai Town and determined it as the capital of Haibei Tibetan Autonomous Prefecture.
Atomic city, formerly known as the former State-owned 22 1 Factory of China National Nuclear Corporation (also known as Qinghai Mining Area). Today's atomic city, also known as Xihai Town, is the seat of Haibei Tibetan Autonomous Prefecture in Qinghai Province.
Atomic city is located in the northeast of the Autonomous Prefecture, on the Jinyintan grassland in Haiyan County, 9 kilometers away from Haiyan County, with an average elevation of 32 10 meter, covering an area of 570 square kilometers (1 170 square kilometers in the initial stage), including a factory building of 333,000 square meters.
The special railway line is 38.9 kilometers, and the asphalt concrete standard road is 75 kilometers, which is away from Xining 1 10, the capital of Qinghai Province. There are mountain barriers in the northeast, west and south, and the delay zone of grassland in the southeast, with flat terrain, Harejing River in the east and Mapis River in the west.
Northwest wind prevails in Xihai Town, with the largest wind in spring and the smallest wind in summer. The average wind speed in the wind season is 3. 1 m/s, and the maximum wind force is 23.3 m/s; The annual precipitation is 400 mm, the annual evaporation is 1538.5 mm, and the average temperature is -0.45 degrees Celsius.
According to reports, at that time, 22 1 base had seven sub-factories, one of which was responsible for warhead processing, uranium parts production, precision processing and radio system control. The second factory is mainly responsible for explosive processing, synchronous focusing experiment, initiating explosive device processing and nuclear weapon assembly; The third branch factory is a mechanical processing factory, which is responsible for sand turning, forging, heat treatment and oxygen production.
The fourth factory is a thermal power plant, which is responsible for boiling water, heating and power supply to the base and is still in use today; The fifth factory is a water plant; The sixth factory is the detonation testing ground; The No.7 Factory is an experimental field for radiochemistry and neutron physics.
The former site of the base is divided into two areas, A and B. Area B is located in Haiyan County, which is mainly a living area. Area A is now Xihai Town (atomic city), which is the political, cultural, scientific research and production center of the base. There are 18 county-level units in Area A, referred to as "Eighteen Areas" for short.
Baidu Encyclopedia-atomic city