Why was China's Eye of the Sky built in Bijie, Guizhou?

There are three reasons for choosing Bijie in Guizhou. First, the landform is closest to the shape of FAST, and the amount of excavation is the smallest. Second, the karst geology here can ensure that rainwater penetrates underground and will not be deposited on the surface to damage and corrode the telescope; Third, the radio telescope needs a "static soil". There are no towns and villages within 5km of Fiona Fang near "Dawodang", and the radio environment is ideal.

The karst depression on the surface of the depression is developed, with large topographic relief, steep slope and simple landform type, and steep mountains in some areas, forming steep cliffs and footwall. China Academy of Sciences registered and established Guizhou Radio Observatory in Guiyang, Guizhou Province to manage the project. Generally, it is located in the slope zone of transition from Guizhou Plateau to hilly area of Guangxi, with high terrain in the north and low terrain in the south, and carbonate rocks are widely distributed in the area.

The extended data FAST is located in Dawodang Depression, Jinke Village, Kedu Town, Pingtang County, Qiannan Buyi and Miao Autonomous Prefecture, Guizhou Province. This depression is located at 25.647222 degrees north latitude and 583 degrees east longitude106.85km with a diameter of about 800 meters, 85km northeast of Pingtang County and 45km southwest of Luodian County.

It is generally located in the slope zone where Guizhou Plateau transits to Guangxi hills. The terrain is generally high in the north and low in the south. Carbonate rocks are widely distributed in the area, with extremely developed karst peaks, depressions and depressions, uneven terrain and low mountainous terrain. The highest ridge in Dawodang Depression is the southeast hills, with an elevation of 120 1m, the lowest elevation of the depression is 84 1m, and the maximum relative height difference is 360m m..

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