Soil sampling device and soil sampling method

摘要

To provide a soil sampling device and a soil sampling method that can collect a soil sample with less disturbance by, for example, utilizing a Swedish weight sounding test device.SOLUTION: The soil sampling device includes an outer tube 1, an inner tube 2, a screw shaft 4, a bearing 5, a push-in base 6, a piston 7, a rib 8, and a guide 9. The screw shaft 4 is provided in the inner tube 2 so that their axes O1 are arranged coaxially. The bearing 5 is provided integrally on a rear end side of the outer tube 1 and axially supports the screw shaft 4 about the axis O1 rotatably. The push-in base 6 is provided integrally on a rear end side of the inner tube 2 and rotates the screw shaft 4 about the axis O1 normally and reversely as well as advancing and retracting in the direction of the axis O1. The piston 7 is provided by being connected to the tip of the screw shaft 4, and is arranged so as to close the opening of the inner tube 2 on the tip side in the state where the inner tube 2 is retracted. The rib 8 protrudes outside from an outer surface of the outer tube 1 and prevents the outer tube 1 from co-rotating by biting into the ground. The guide 9 guides the push-in base 6 and the inner tube 2 in the direction of the axis O1 to make them advance and retract.SELECTED DRAWING: Figure 1