Soil adhesion testing device and testing method

The invention discloses a soil adhesion testing device, which belongs to the technical field of tunnel construction, and comprises a sample cylinder, a testing disc, a pressure control assembly, a temperature control member, an adhesion detection assembly and a control system, and the testing disc is arranged in the sample cylinder; the pressure control assembly is communicated with the sample cylinder and used for controlling the pressure on the surface of the slurry material in the sample cylinder; the temperature control piece is connected with the measuring disc; the adhesive force detection assembly is simultaneously connected with the sample cylinder and the measuring disc and is used for detecting normal adhesive force or/and tangential adhesive force between the measuring disc and the soil sample; the control system is electrically connected with the pressure control assembly, the temperature control piece and the adhesion force detection assembly at the same time. The invention further provides a soi