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Rayleigh Wave Assessment of Damage and Integrity of Mine Structures.

Authors
Friedel-MJ; Thill-RE
Source
MISSING :12 pages
Link
NIOSHTIC No.
10011010
Abstract
The integrity of mine structures, such as the roofs, ribs, face, and supporting pillars, is difficult to assess beyond the exposed surface. To mitigate potential rockfall hazards, the U.S. Bureau of Mines is assessing the usefulness of rayleigh wave dispersion analysis to detect damage and stress-relieved zones in mine structures. Classical surface wave dispersion modeling is utilized at both laboratory and field scales in damaged and undamaged material to assess the integrity of a mine pillar and roof. To more fully exploit rayleigh wave propagation characteristics, derivation of a novel dispersion parameter was conducted using a convolutional model. The development of a suitable rayleigh wave dispersion system based on insight derived from forward modeling is presented. The application of inverse modeling for damage and stress assessment in the mine environment is also discussed.
Publication Date
19910101
Document Type
IH; Report of Investigations;
Fiscal Year
1991
NTIS Accession No.
NTIS Price
Identifying No.
RI 9389
NIOSH Division
TCRC;
Source Name
MISSING
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