| 摘要 |
PROBLEM TO BE SOLVED: To provide a geological survey sampler capable of adopting an undisturbed sampler. SOLUTION: The geological survey sampler includes a first body (20) and a second body (30), the first body and/or the second body is formed of a half member or a member having a U-shaped cross section, guiding means (22, 24, 32 and 34) for guiding each other are provided to the longitudinal edge sections of the first body and the second body when these bodies are united with each other, and a triangular projection (36) in side view expanded in the horizontal direction is provided to the outside of the lower part of the second body.
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