Monitoring method and system for thickness of active layer and thickness change in permafrost region

By burying measuring tubes in permafrost areas and monitoring the changes in float height, the problem of difficulty in accurately monitoring the thickness and thickness changes of the active layer in the prior art is solved, and accurate and continuous monitoring is achieved to support infrastructure design and ecosystem evaluation.

CN119178396BActive Publication Date: 2025-03-21NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
2 Cites 0 Cited by

Patent Information

Application Number
CN202411650440.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-19
Publication Date
2025-03-21
Estimated Expiration
2044-11-19

AI Technical Summary

Technical Problem

The prior art is difficult to accurately and continuously monitor the thickness and thickness changes of the active layer in permafrost areas, especially in harsh environments, resulting in risks in infrastructure design and maintenance.

Method used

A monitoring method and system are adopted to bury sealed and smooth inside and outside measuring tubes in the permafrost area, inject pure water and set up floats to monitor the change in float height and calculate the thickness and thickness of the moving layer. The system includes a frozen front sensing unit, a data acquisition unit and a data analysis unit, which can automatically and continuously perform data acquisition and analysis.

Benefits of technology

Accurate and continuous monitoring of the thickness and thickness changes of the active layer in the permafrost area has been achieved, monitoring accuracy and data timeliness, manual intervention is reduced, harsh environments are adapted to infrastructure design and ecosystem health assessment.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The present invention discloses a monitoring method and system for the thickness and thickness change of the active layer in permafrost areas. The active layer thickness monitoring includes the following steps: in the warm season, a measuring tube with sealed ends and smooth inside and outside is buried underground, and the buried depth below the surface is, pure water is injected into the measuring tube, and the height of the pure water is flush with the surface, a buoy is provided in the measuring tube and floats on the liquid surface, and a vent is provided on the top of the measuring tube; when the active layer melts to the maximum depth, the buoy height is detected; when the active layer is completely frozen, the buoy height is detected; by monitoring the change of the buoy height, the difference between the highest position and the lowest position of the buoy in a freeze-thaw cycle is used to automatically calculate the thickness of the active layer, wherein. The measuring method of the present invention is simple and has high measurement accuracy.
Need to check novelty before this filing date? Find Prior Art