Transmission-type radioisotope ground measurement device and ground measurement method using radioisotopes

The device addresses damage and insertion issues of transmission-type radioisotope equipment by using protective tubes and independent insertion mechanisms, ensuring safe and precise ground property measurements.

JP2026101014APending Publication Date: 2026-06-22PENTA OCEAN CONSTRUCTION CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
PENTA OCEAN CONSTRUCTION CO LTD
Filing Date
2024-12-10
Publication Date
2026-06-22

AI Technical Summary

Technical Problem

Conventional transmission-type radioisotope ground measurement devices face issues such as damage to the line source rod during insertion, accidental loss of the line source in the soil, fluctuation in transmission distance due to uneven ground, and inability to measure at varying depths, leading to inaccurate ground property assessments.

Method used

A transmission-type radioisotope ground measurement device with a source unit and detection means, featuring protective tubes and independent insertion/removal mechanisms for the radiation source and detector rods, allowing for safe insertion, protection against damage, and accurate measurements at various depths and directions.

Benefits of technology

Prevents damage to the radiation source and detector rods, ensures accurate measurements by maintaining consistent transmission distance, and enables high-precision ground property determination with reduced influence from ground unevenness.

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Abstract

To provide a transmission-type radioisotope ground measurement device and a ground measurement method using radioisotopes that can safely and accurately insert a source rod into the soil and perform high-precision measurements. [Solution] This transmission-type radioisotope ground measurement device 2 comprises a source unit consisting of a source rod 10 with sources 3 and 4 held at its lower end, a source-penetrating protective tube 11 having a radiotransmitting section through which radiation emitted from sources 3 and 4 can pass, a source-penetrating protective tube lifting means for pressing the source-penetrating protective tube 11 into the ground, and a source rod insertion / removal means for inserting and removing the source rod into the source-penetrating protective tube 11.
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