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Role of fault slip on mechanisms of rock burst damage, Lucky Friday Mine, Idaho, USA.

Authors
White-BG; Whyatt-JK
Source
Proceedings of the Second Southern African Rock Engineering Symposium. Implementing Rock Engineering Knowledge September 13-15, Johannesburg, S. Africa. Lisboa, Portgual: International Society of Rock Mechanics 1999 Jan; :169-178
Link
NIOSHTIC No.
20025232
Abstract
Various methods of monitoring slip movements on bedding planes, as well as examination of rock burst damage in stopes, suggest that many rock bursts in the Lucky Friday Mine are closely associated with these movements. Slip displacements along bedding simultaneously reduce the physical dimensions of stopes and increase compressive stress along stope margins. Such changes, in turn, contribute directly to sudden failures of rock and cemented sandfill surrounding stopes. We believe that the reduction of rock burst hazards must be based on a clear understanding of the basic mechanisms involved. The current work emphasizes the mechanical role of wall rock movement and seismicity in generating conditions that promote rock burst damage. Based on our interpretations of these mechanisms, we briefly address several hypothetical practices that could influence rock burst hazards in similar mining situations. The overall goal of this research is to advance the NIOSH mission of improving the health and safety of the nationís workers.
Keywords
Mining-industry; Ground-control; Ground-stability; Geology; Rock-bursts; Rock-falls; Rock-mechanics
Publication Date
19990101
Document Type
Conference/Symposia Proceedings
Editors
Hagan-TO
Fiscal Year
1999
NTIS Accession No.
NTIS Price
NIOSH Division
SRL
Source Name
Proceedings of the Second Southern African Rock Engineering Symposium
State
WA; ID
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