Blast vibration monitoring in underground mining operations employs a combination of remote sensing technologies, seismograph networks, and IoT-enabled systems to ensure safety and regulatory compliance. These systems measure ground vibrations and air overpressure to prevent structural damage and minimize community impact. Let’s explore some technologies.
Remote Microwave Interferometry
Hexagon’s radar-based system measures ground vibrations across broad areas from safe distances. This technology captures real-time vibration data without requiring personnel near blast zones, enhancing safety in confined underground spaces.
Seismograph Networks with Web-Based Access
Strategically placed seismographs transmit data via landline modems to centralized platforms (e.g., BlastVibrations). This allows:
- Real-time vibration tracking across multiple mine levels.
- Third-party verification for community transparency.
- Historical data comparison to demonstrate compliance trends.
Near-Field High-Frequency Monitoring
Instantel’s geophones (30–1000 Hz range) are deployed near critical infrastructure like shafts, ventilation systems, and equipment. Key functions include:
- Assessing vibration impacts on adjacent mine levels.
- Adjusting blast designs to improve rock fragmentation.
- Protecting structural integrity through high-frequency wave analysis.
