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Design of underground openings in competent rock
Design principles for openings and pillars in massive formations are obtained by considering maximum tangential stresses as developed around single and multiple openings for stress fields of various types; design principles for openings and pillars in bedded formations are obtained by considering average stress in pillars and maximum stresses in roof layers; experimental procedures.
Design of underground openings in competent rock
Design principles for openings and pillars in massive formations are obtained by considering maximum tangential stresses as developed around single and multiple openings for stress fields of various types; design principles for openings and pillars in bedded formations are obtained by considering average stress in pillars and maximum stresses in roof layers; experimental procedures.
Design of underground openings in competent rock
US Bur Mines -- Bul
Obert, L. (Autor:in) / Duvall, W.I. (Autor:in) / Merrill, R.H. (Autor:in)
1960
36 pages
Aufsatz (Zeitschrift)
Englisch
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