00000000nam 2200000za 4500
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008170724s1966    oncad   ob   f000 0 eng d
040 |aCaOODSP|beng
043 |an-cn---
0861 |aM38-8/19E-PDF|zM38-8/19
1001 |aCoates, D. F., |d1923-
24510|aAnalyses of pit slides in some incompetent rocks |h[electronic resource] / |cD.F. Coates, K.L. McRorie and J.B. Stubbins, Fuels and Mining Practice Division.
260 |aOttawa : |bQueen's Printer, |c1966.
300 |ap. 94-101 : |bcharts, ill.
4901 |aReprint series ; |vRS 19
500 |aCover title.
500 |a"Reprinted from Trans. of the Society of Mining Engineers of AIME, March 1963, pp. 94-101."
500 |aHistorical publication digitized from print 2017 [by Natural Resources Canada].
504 |aIncludes bibliographical references.
5203 |a"Twenty-two pit slides that occurred in two Canadian open pit mining properties are analyzed. Information on the results of laboratory tests of the rocks and a brief description of the geological environment are also presented. One deduction from the study is that slides seem to be predictable by using established theory. This corroboration indicates that, contrary to normal mining practice, the appropriate slope angle should vary with the height of the wall. In addition, if the general ground water level around an open pit can be reduced, the appropriate slope angles of the walls could then be increased by a determinable amount. The ultimate objective of these investigations is to determine the relationship between the percentage probability of failure of any slope designed with specific strength parameters. With this relationship it would then be possible to determine optimum slope angles"--p. 94.
69207|2gccst|aMining industry
69207|2gccst|aLandslides
69207|2gccst|aRocks
69207|2gccst|aPhysics
7001 |aMcRorie, K. L.
7001 |aStubbins, J. B.
7101 |aCanada. |bNatural Resources Canada.
7101 |aCanada. |bDepartment of Energy, Mines and Resources.
7101 |aCanada. |bMines Branch.
830#0|aReprint series - Dept. of Energy, Mines and Resources, Mines Branch ;|vRS 19|w(CaOODSP)9.834843
85640|qPDF|s4.99 MB|uhttps://publications.gc.ca/collections/collection_2017/rncan-nrcan/M38-8/M38-8-19-eng.pdf
986 |a300098