Seismic sensors detect and measure small ground vibrations caused during mining operations. They can be deployed in various configurations around a zone of interest to provide the best possible detection coverage. ESG offers a range of seismic sensors, including geophones and accelerometers for downhole, uphole and surface installation. Sensors are also available in triaxial (3-component) or uniaxial formats for added flexibility.
Geophones are commonly used sensors in mining applications for their robust performance and cost effectiveness. ESG offers two primary types of geophones. Our 15 Hz geophones easily detect signals associated with high frequency, small-scale microseismic events and are omni-directional for installation at any orientation. Our 4.5 Hz geophones are optimized for larger magnitude seismicity (such as blasts or strong-ground motion events) and must be installed vertically.
Accelerometers are often included in sensor arrays for their increased sensitivity and ability to detect small magnitude seismicity. ESG offers a range of omni-directional accelerometers with sensitivities of 0.1 V/g, 1 v/g, 2.4 V/g and 30 V/g.
ESG routinely designs microseismic sensor arrays that use a combination of geophones and accelerometers for optimal array performance. Please contact ESG if you are interested in discussing available options or to request detailed product specifications.