Geotechnical Vibration Monitoring

Highlights

• Strong transient signals: blast particle velocity and acceleration peaks are large with steep rising edges, requiring a wide range without saturation and broadband response without distortion.

• Wide frequency range: from low-frequency micro-vibration of dams to the kHz band of near-field blast shock, all must be covered uniformly.

• Distributed multi-point synchronisation: slope, tunnel and dam monitoring needs tens to hundreds of synchronised points, with a microsecond-level time base for wave-velocity inversion and time-difference location.

• One-shot test opportunities: a single blast cannot be reproduced, so pre-triggering and stable triggering directly determine success.

• Harsh field conditions: construction sites bring dust, humidity, large temperature swings and unstable power, so measurement points need long field endurance and maintenance-free operation.

• Reports feed safety reviews: data must support blast-safety assessment, slope-stability analysis and engineering review, demanding strong data traceability and standardised reporting.

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