▎ 摘　　要

NOVELTY - Formation pressure sensor based on grapheme comprises a graphene film (6) arranged on a surface of an elastic film (7) deviating from an end part of a deformation transmission rod. An electrode (5) is arranged on a surface of the graphene film facing away from the elastic film. An electric signal transmission structure is connected between two opposite ends of the elastic film and an inner wall of a shell (1) by a lead and the electrode. A groove is opened at a bottom part of the shell. A soil-retaining permeable structure (4) is arranged in the groove for preventing stratum soil fine particles from entering the groove to extrude the bottom part of the shell. USE - Used as formation pressure sensor based on grapheme. ADVANTAGE - The sensor: can adjust the measuring range and resolution of the sensor; can detect total water and soil pressure and pore water pressure at the same time; has worthy of promotion. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of the formation pressure sensor based on grapheme. Shell (1) Soil-retaining permeable structure (4) Electrode (5) Graphene film (6) Elastic film (7)