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Mechanics of a large, strain-type rock burst and design for prevention.

Authors
White-BG; Williams-TJ; Whyatt-JK
Source
NARMS-TAC 2002, "Mining and Tunnelling Innovation and Opportunity," Proceedings of the 5th American Rock Mechanics Symposium and the 17th Tunnelling Association of Canada Conference, July 7-10, 2002, Toronto, Ontario, Canada. Hammah R, Bawden W, Curran J, Telesnicki M, eds., Toronto, Ontario, Canada: University of Toronto Press, 2002 Jul; 2:1095-1101
Link
NIOSHTIC No.
20030440
Abstract
Detailed mapping and examination of the site of a large rock burst at the Lucky Friday Mine, Mullan, ID, demonstrated conclusively that damage was caused by a splitting and buckling failure mechanism initiated by separation of rock into layers along steeply dipping metamorphic shear foliation subparallel to the affected crosscut. The thin tablular layers then buckled into the crosscut from both sides. Rigorous control of the burst by these layers suggests practical measures for avoiding bursts in crosscuts in the future by repositioning and reorienting openings so that splitting and buckling are reduced or precluded.
Keywords
Rock-mechanics; Rock-bursts; Mining-industry; Case-studies; Mine-disasters; Occupational-hazards
Publication Date
20020710
Document Type
Conference/Symposia Proceedings; Book or book chapter
Editors
Hammah-R; Bawden-W; Curran-J; Telesnicki-M
Fiscal Year
2002
NTIS Accession No.
NTIS Price
ISBN No.
0772767084
NIOSH Division
SRL
Source Name
NARMS-TAC 2002, "Mining and Tunnelling Innovation and Opportunity," Proceedings of the 5th American Rock Mechanics Symposium and the 17th Tunnelling Association of Canada Conference, July 7-10, 2002, Toronto, Ontario, Canada
State
WA
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