Experimental device and experimental method for measuring static lateral pressure of soil body

The invention relates to the technical field of soil static lateral pressure measurement, in particular to an experimental device and an experimental method for measuring the soil static lateral pressure. The experimental device for measuring the static lateral pressure of the soil body comprises a volume body, a pressure applying unit, a static lateral pressure measuring unit and a soil body humidity control unit. And an open cavity for placing a soil body to be experimented is formed in the volume body. Under the action of the pressure applying unit, the static side pressure of the to-be-tested soil body changes, and the static side pressure measuring unit measures and records the static side pressure in real time. The soil body humidity control unit comprises a pressure water supply pipe and a lower permeable stone plate. The lower permeable stone plate is horizontally arranged in the open cavity, is used as a bedding foundation of a soil body to be experimented, and is deeply penetrated by the pressure wa