Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Determining in-place support of mine roof with rock bolts, white pine Copper Mine, Michigan
Method devised to determine in-place support which would consider unbonded fractures; bolts were selectively removed and roof sag, roof strain, and changes in bolt loads were measured concurrently and used to compute number of bolts required for support.
Determining in-place support of mine roof with rock bolts, white pine Copper Mine, Michigan
Method devised to determine in-place support which would consider unbonded fractures; bolts were selectively removed and roof sag, roof strain, and changes in bolt loads were measured concurrently and used to compute number of bolts required for support.
Determining in-place support of mine roof with rock bolts, white pine Copper Mine, Michigan
US Bur Mines -- Report Investigations
Merrill, R.H. (Autor:in) / Morgan, T.A. (Autor:in) / Stehlik, C.J. (Autor:in)
1961
28 pages
Report
Englisch
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