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Mining Publication: Evaluation of the Seismic System for Locating Trapped Miners
Keywords: Modeling Seismic methods
Original creation date: November 1981
Authors: JA Durkin, RJ Greenfield
Report of Investigations - November 1981
Download PDF Document (2.45 MB)
NIOSHTIC2 Number: 10002204
U.S. Department of the Interior, Bureau of Mines. Report of Investigations 8567, NTIS No. PB82-145434, 1981; :1-61
This report discusses the configuration and system deployment for the postdisaster surface seismic system for detecting and locating trapped miners. It analyzes the results of 15 field tests to define a signal model, background noise levels, and subarray performance. A waveform modeling procedure is described and compared with observed waveforms. The resulting similarity indicates that the major factors affecting the signal amplitude, waveform, and spectral character are understood. A model is presented which gives the signal amplitude as a function of source type, source depth, and horizontal offset between source and receiver. Using this model a curve is presented gives the range at which a signal will be detected for different signal and noise levels. Finally, and most important relative to the mission of the system, the ability of the system to detect signals on one or more subarrays is put into a probabilistic framework. For a strong source it is almost certain that a subarray directly over the source will detect the signal. After signal processing, it is highly likely that signals will be detected on sufficient subarrays to locate the trapped miner. Location errors have been found to be less than 100 ft in the majority of cases. Techniques have been used that can reduce the location errors to this level even when soil layer variation between subarrays is severe
Image of publication Evaluation of the Seismic System for Locating Trapped MinersReport of Investigations - November 1981
Download PDF Document (2.45 MB)
NIOSHTIC2 Number: 10002204
U.S. Department of the Interior, Bureau of Mines. Report of Investigations 8567, NTIS No. PB82-145434, 1981; :1-61
See Also
A CART Technique to Adjust Production from Longwall Coal Operations under Ventilation Constraints
CFD Modeling of Fire Spread Along Combustibles in a Mine Entry
Evaluation of the Relative Importance of Coalbed Reservoir Parameters for Prediction of Methane Inflow Rates During Mining of Longwall Development Entries
Experimental and Modeling Investigation of the Effect of Ventilation on Smoke Rollback in a Mine Entry
Modeling and Data Analysis of 50 to 5000 kHz Radio Wave Propagation in Coal Mines
Reservoir Engineering Considerations for Coal Seam Degasification and Methane Control in Underground Mines
Reservoir Modeling-Based Prediction and Optimization of Ventilation Requirements During Development Mining in Underground Coal Mines
Theoretical Noise and Propagation Models for Through-the-earth Communication
UDEC Modeling of an Underground Opening in a Rock Mass of Varying Quality
Variation of Horizontal Stresses and Strains in Mines in Bedded Deposits in the Eastern and Midwestern United States
Page last reviewed: April 1, 2015
Page last updated: April 1, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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