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Current research on slope movement in mines: use of hyperspectral imagery.

Authors
McHugh-EL; Girard-JM; Denes-LJ; Metes-P; Sabine-C
Source
14th International Conference on Applied Geologic Remote Sensing, 2000 Nov Las Vegas, NV :1-8
Link
NIOSHTIC No.
20022784
Abstract
The Spokane Research Laboratory, National Institute for Occupational Safety and Health, is investigating various remote sensing technologies as possible tools to detect, monitor, and mitigate hazardous situations in surface mines that could lead to catastrophic slope failure. Promising technologies include a field-portable spectro-polarimetric imager and a stationary interferometric radar device. Field tests were conducted of a prototype visible and near-infrared spectro-polarimetric imager (SPI) built at the Carnegie Mellon Research Institute. The SPI employs an acousto-optical tunable filter (AOTF) to control wavelength, a phase retarder to measure polarization signatures, and a digital camera and computer to capture data. Images obtained at the Mountain Pass and Castle Mountain mines in southeastern California showed that the instrument is capable of obtaining hyperspectral images of highwalls, outcrops, hand samples and drill core in the field. We have retrieved spectra from Mountain Pass images that closely match those of bastnaesite and have had some success in classifying images. Although radio frequency noise in the data limited spectral classification of imagery, we project that careful alignment of the AOTF should minimize the noise and greatly improve classification.
Keywords
Mining-industry; Surface-mining; Geology; Slope-stability; Ground-control; Monitoring-systems
Publication Date
20001101
Document Type
Conference/Symposia Proceedings
Fiscal Year
2001
NTIS Accession No.
NTIS Price
NIOSH Division
SRL
Priority Area
Other Occupational Concerns
Source Name
14th International Conference on Applied Geologic Remote Sensing
State
CA; WA; NV
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