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Geotechnical Deformation Distributed Measuring Technology Research Based on Parallel Spiral Sensing Line.
Xinyu Miao1, Qing Li1, Renyuan Tong1
1National and Local Joint Engineering Laboratories for Disaster Monitoring Technologies and Instruments, China Jiliang University, Hangzhou 310018, China.
Sensors (Basel, Switzerland)
|September 28, 2023
Summary
This study introduces a new method for detecting geological disasters using Time Domain Reflection (TDR) technology. The system measures geotechnical deformation with a parallel spiral wire sensor for early warning systems.
Area of Science:
- Geotechnical Engineering
- Geological Disaster Monitoring
- Sensor Technology
Background:
- Geological disasters are often preceded by geotechnical deformations.
- Effective monitoring and early warning systems are crucial for mitigating disaster impacts.
Purpose of the Study:
- To develop and validate a Time Domain Reflection (TDR) measurement system for distributed geotechnical deformation monitoring.
- To utilize a parallel spiral wire as a sensor for detecting and quantifying ground movement.
Main Methods:
- Analysis of the electromagnetic field distribution parameters of a parallel spiral sensing wire.
- Establishing the relationship between the stretching of the wire and changes in its characteristic impedance.
- Development of a TDR measurement system based on this principle.
Main Results:
- Demonstrated that stretching of the parallel spiral wire directly correlates with changes in its characteristic impedance.
- Successfully developed a TDR system capable of distributed geotechnical deformation measurement.
- Experimental validation confirmed the effectiveness of the sensing technology for stretching amount and positioning.
Conclusions:
- The developed TDR system using parallel spiral wire sensors is effective for distributed geotechnical deformation monitoring.
- This technology provides a viable solution for early warning detection of geological disasters.
- The system's usability and the sensing technology's effectiveness have been experimentally verified.
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