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Direct tomographic reconstruction and applications to mining.

Authors
Stroud-WP; Dennen-RS
Source
Denver, CO: U.S. Department of the Interior, Bureau of Mines, RI 9361, 1991 Jan; :1-17
Link
NIOSHTIC No.
10009155
Abstract
In this U.S. Bureau of Mines report, the conditions required for the direct reconstruction of a tomogram from observed line integrals are examined. Because of the limited access to the working faces in coal mines, the special case of access to only two opposite faces is emphasized. Classical matrix methods were used for small-dimensional (2 by 2, 3 by 3, and 4 by 4) applications to determine the limitations and the requirements for a solution. The results for large (n by n) grids were then inferred and generalized from those of the smaller grids and matrices. Limited-access tomography is found to be appropriate for in-seam hazard detection from seismic and microwave data, but it is shown that additional data must be added to obtain a direct solution.
Keywords
Microwaves-; Seismic-prospecting; Matrices-Mathematics; Numerical-analysis; Computer-programs; Image-enhancement; Grids-Coordinates; Hazards; Coal-mines; Tomography; Exploration
Publication Date
19910101
Document Type
IH; Report of Investigations
Fiscal Year
1991
NTIS Accession No.
PB91-230342
NTIS Price
A03
Identifying No.
RI-9361
NIOSH Division
DRC
Source Name
Denver, CO: U.S. Department of the Interior, Bureau of Mines, RI 9361
State
CO
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