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Title: Characterization of Abandoned Mine Voids Under Roadway with Land-Streamer Seismic Waves
Accession Number: 01593900
Record Type: Component
Record URL: Availability: Find a library where document is available Abstract: The paper presents an application of two-dimensional (2-D) time-domain waveform tomography for characterization of abandoned underground mine voids under a highway. Measured surface-based seismic wave fields are inverted by a full waveform inversion technique that is founded on a finite-difference solution of 2-D elastic wave equations and the Gauss–Newton inversion method. The key advantage of this waveform approach is the ability to generate all possible wave propagation modes of seismic wave fields (body waves and Rayleigh waves) by forward modeling; the modes are then compared with measured data to infer complex subsurface properties. Both the pressure wave and shear wave velocities are inverted independently and simultaneously to increase the credibility of characterized profiles. Real experimental data sets were collected on asphalt pavement by using a land streamer, which did not require that geophones be coupled into the pavement and allowed the testing system to be moved along the road quickly. The seismic results show that the waveform analysis was able to delineate two mine voids embedded at a depth of about 15 m. The existence of the voids was confirmed by confirmation drilling.
Monograph Title: Geological, Geoenvironmental, and Geotechnical Engineering, Volume 3 Monograph Accession #: 01589875
Report/Paper Numbers: 16-1393
Language: English
Authors: Sullivan, BrianTran, Khiem TLogston, BrianPagination: pp 71–79
Publication Date: 2016
ISBN: 9780309369763
Media Type: Print
Features: Figures
(9)
; Photos; References
(31)
TRT Terms: Uncontrolled Terms: Subject Areas: Geotechnology; Highways; Pavements
Files: TRIS, TRB, ATRI
Created Date: Jan 12 2016 4:37PM
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