Underground Space Exploration Project, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences

The State Key Laboratory of Geodesy and Earth's Dynamics, affiliated with the Innovation Academy for Precision Measurement Science and Technology of the Chinese Academy of Sciences, has utilized Puniu HiFi-DAS equipment in multiple experiments. The main monitoring contents include: using seismic wave signals generated by traffic activities, adopting newly developed seismic interferometry techniques and weak signal extraction methods, to replace active sources for shallow stratum imaging, and conducting detection and early warning for subgrade stability, tunnel structures, underground cavities, underground rivers, and leakage.