Building structure deeply buried underground and construction method thereof

The invention discloses a building structure deeply buried underground and a construction method thereof.The building structure comprises a vertical supporting structure and a transverse supporting structure, a notch is formed in one side of the vertical supporting structure, and the transverse supporting structure is located in the notch; the vertical supporting structure and the transverse supporting structure are each composed of a plurality of continuous ring bodies, inclined blade angles are arranged on the first-layer ring bodies of the vertical supporting structure and the transverse supporting structure, and the blade angles can reduce resistance in the sinking or propelling process. The ring body is formed by splicing a plurality of concrete prefabricated parts, and a notch is formed by disassembling part of the prefabricated parts; the two sides of each prefabricated part are provided with an inserting groove and a protruding block respectively, and the adjacent prefabricated parts of the same ring