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Title Rock mechanics investigations at the Lucky Friday Mine. Part 1. Instrumentation of an experimental underhand longwall stope. Report of Investigations/1992
Creator/Author Williams, T.J. ; Wyatt, J.K. ; Poad, M.E.
Publication Date1992 Jan 01
OSTI IdentifierOSTI ID: 6878661
Report Number(s)PB-93-132835/XAB;BUMINES-RI--9432
Resource TypeTechnical Report
Resource RelationSee also Part 2, PB--93-132843
Research OrgBureau of Mines, Spokane, WA (United States). Spokane Research Center
Subject012031 -- Coal, Lignite, & Peat-- Underground Mining-- Strata Mechanics & Control-- (1987-); COAL MINING-- ROCK MECHANICS; BENCH-SCALE EXPERIMENTS;CAVING MINING;DESIGN;EVALUATION;INFORMATION;INSTALLATION;INVESTIGATIONS;LEADING ABSTRACT;MATHEMATICAL MODELS;MINES;MONITORING;PERFORMANCE TESTING;STABILITY
Related SubjectABSTRACTS;ADMINISTRATIVE PROCEDURES;DOCUMENT TYPES;MECHANICS;MINING;TESTING;UNDERGROUND FACILITIES;UNDERGROUND MINING
Description/Abstract Researchers at the U.S.^Bureau of Mines monitored rock mass response to mining of an experimental underhand longwall stope in Hecla Mining Co.`s Lucky Friday Mine, Mullan, ID.^The stope design, the Lucky Friday underhand longwall (LFUL), was proposed as a means of controlling rock bursting while, at the same time, allowing increased mechanization of mining operations.^Instruments were specifically manufactured to monitor three geomechanical factors (backfill performance, ramp stability, and rock mass response) that directly affect the success of the stope design.^Despite considerable difficulties with instrument installation and survival in the harsh mine environment, especially within the stope fill, sufficient information was collected to suggest that the LFUL method was successful in achieving project goals.^The conclusion, along with favorable economic and operational evidence, led the mine to adopt the method throughout the mine.
Country of PublicationUnited States
LanguageEnglish
FormatPages: (32 p)
AvailabilityNTIS
System Entry Date2001 May 13

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