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Mining Publication: High Resolution Seismic Refraction Tomography for Determining Depth of Blast Induced Damage in a Mine Wall
Keywords: Blasting Seismic methods
Original creation date: August 2009
Authors: JA Singer, CA Link, SR Iverson
Peer Reviewed Journal Article - August 2009
Download PDF Document (1.27 MB)
NIOSHTIC2 Number: 20036019
Blasting Fragm 2009 Aug; 3(2):115-140
High resolution seismic refraction tomography has proved to be a useful tool to effectively estimate depth of blast induced damage in a mine face. Excavation blast damage can be as shallow as 1 to 2 m and requires resolution at a fraction of a meter for effective imaging. In this study, an accelerometer was used with flat frequency response to 1,000 Hz to record data at spacings of approximately 0.25 to 0.5 m along mine walls. First arrival times from the seismic data were used to produce P-wave velocity tomograms. The tomograms show transition from low velocity zones to velocity associated with competent rock. The low velocity zones were interpreted to indicate residual fracturing from blasting. Experiments on a concrete test block and at two underground mine locations give results that are consistent with fractured rock transitioning to competent rock. This method can be applied efficiently in an underground environment to provide continuous velocity information with depth into a mine wall over a span of approximately 10 m.
Image of publication High Resolution Seismic Refraction Tomography for Determining Depth of Blast Induced Damage in a Mine WallPeer Reviewed Journal Article - August 2009
Download PDF Document (1.27 MB)
NIOSHTIC2 Number: 20036019
Blasting Fragm 2009 Aug; 3(2):115-140
See Also
Blast Wave Propagation in Underground Mines
A Century of Bureau of Mines/NIOSH Explosives Research
Development of an Automated PC-Network-Based Seismic Monitoring System
Fatal Accidents Due to Flyrock and Lack of Blast Area Security and Working Practices in Mining
A Gas Pressure-Based Drift Round Blast Design Methodology
Low Temperature Limits for Mixing Recycled Oil, Diesel Fuel, and Ammonium Nitrate to Make ANFO-Type Blasting Agents
Safe Distances for Blasting Wiring from Commonly Encountered Underground Electromagnetic Energy Sources
A Summary of Fatal Accidents Due to Flyrock and Lack of Blast Area Security in Surface Mining, 1989 to 1999
Technology News 522 - Blast Area Security: Flyrock Safety
Toolbox Training on Flyrock Awareness
Page last reviewed: July 16, 2015
Page last updated: July 16, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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