Geotechnical cloth moisture characteristic curve measuring device

The invention relates to the field of geotechnical cloth moisture characteristic curve measurement, and discloses a geotechnical cloth moisture characteristic curve measuring device which comprises a fixed box, a length adjusting box body and a test box which are sequentially connected in a sliding and nested mode and are sequentially communicated so that a piece to be measured can sequentially penetrate through the fixed box, the length adjusting box body and the test box. The fixed box is provided with a placing opening for placing a to-be-tested piece, and the test box is provided with a through opening communicated with the outside; the clamping mechanism is arranged on the fixed box and is used for clamping or releasing one end of the to-be-tested piece; the cutting mechanism is used for cutting the to-be-tested piece and can be arranged on the length adjusting box body in a sliding mode in the direction perpendicular to the height direction of the length adjusting box body; the first linear driving mech