Soil column test piece preparation device for geotechnical cloth drainage test

The invention discloses a soil column test piece preparation device for a geotechnical cloth drainage test, the soil column test piece preparation device comprises a workbench, a soil column test piece, a light compactor and other structures, the soil column test piece is installed on the workbench through a soil column test piece fixing device, and the interior of the soil column test piece is of a hollow structure and is used for being filled with a soil body; a transverse geotechnical cloth exposure seam is reserved in the side wall of the soil column test piece and is used for storing geotechnical cloth into the soil body in the piece manufacturing process; the light compactor is arranged on the workbench through a driving device, and the driving device can drive the light compactor to move up and down so as to compact a soil body in the soil column test piece; the sealing mechanism is used for compacting the geotechnical cloth and sealing gaps of exposed seams of the geotechnical cloth; the workpiece man