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Experimental study on comprehensive detection technology of shallow gas in deep soft soil layer
Mingqing Liu1,2,3, Fuxue Sun4
1College of Architecture and Energy Engineering, Wenzhou University of Technology, Wenzhou, 325035, China.
Heliyon
|August 22, 2024
Summary
This study developed advanced shallow gas detection methods for the Wenzhou Light Rail S2 line, integrating probing, electrical, and seismic techniques for accurate underground gas mapping.
Area of Science:
- Geotechnical Engineering
- Geophysics
- Environmental Science
Background:
- Underground shallow gas poses risks to infrastructure projects.
- Accurate detection is crucial for safety and planning in tunnel construction.
Purpose of the Study:
- To develop and validate a comprehensive shallow gas detection technology.
- To identify gas-rich locations in the Lingkun Island area for the Wenzhou Light Rail S2 line.
Main Methods:
- Controlled-release gas with static pressure experiments.
- Multi-functional in-situ probing for soil properties.
- Electrical resistivity and seismic wave (Seismic CT, scattering) methods.
Main Results:
- Accurate determination of physical and mechanical properties of gas-rich soils.
- Identification of anomalous resistivity zones indicating gas presence.
- Precise revelation of shallow gas presence and depth using seismic wave analysis.
Conclusions:
- A comprehensive shallow gas detection plan was established.
- The integrated approach provides a reliable basis for shallow gas exploration.
- Valuable references for future shallow gas exploration in similar areas were provided.
