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Time-dependent rock mass motion at the Homestake Mine, Lead, SD.

Authors
Brady-T; Johnson-JC; Pariseau-B; Stahl-M; Whyatt-J
Source
2000 SME Annual Meeting, Salt Lake City, Utah, February 28 - March 1, 2000. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., Preprint 00-40, 2000 Feb; :1-7
NIOSHTIC No.
20020898
Abstract
An elastic-viscoplastic material model allows for time-dependent rock mass motion in proportion to excess stress above the elastic limit. The model produces rounded stair-step curves of displacement versus time that are similar to those obtained from recent borehole extensometer measurements made in the central portion of the Ross shaft pillar at the Homestake mine. The work in progress, including two- and three-dimensional finite element analyses using the UTAH2/3 codes, indicates that the model is a step towards more realistic safety and stability analysis, but that inclusion of rock mass damage may be desirable.
Keywords
Mining-industry; Models; Underground-mining; Geology
Publication Date
20000226
Document Type
Conference/Symposia Proceedings
Fiscal Year
2000
NTIS Accession No.
NTIS Price
NIOSH Division
SRL
Source Name
2000 SME Annual Meeting, Salt Lake City, Utah, February 28 - March 1, 2000
State
CO; UT; WA; SD
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