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| 02568cam 2200361za 4500 |
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| 001 | 9.840326 |
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| 003 | CaOODSP |
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| 005 | 20221107151820 |
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| 007 | cr ||||||||||| |
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| 008 | 170725s1967 onca ob f000 0 eng d |
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| 040 | |aCaOODSP|beng |
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| 041 | |aeng|bfre|bger |
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| 043 | |an-cn--- |
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| 086 | 1 |aM38-8/35E-PDF|zM38-8/35 |
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| 100 | 1 |aCoates, D. F., |d1923- |
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| 245 | 14|aThe effect of stress concentrations on the stability of tunnels |h[electronic resource] / |cD.F. Coates, Fuels and Mining Practice Division. |
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| 260 | |aOttawa : |bQueen's Printer, |c1967. |
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| 300 | |ap. 299-305 : |bill. |
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| 490 | 1 |aReprint series ; |vRS 35 |
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| 500 | |aCover title. |
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| 500 | |a"Reprinted from Proceedings of the First Congress of the International Society of Rock Mechanics, Vol. II, 1966, Laboratorio Nacional de Engenharia Civil, Lisbon, Portugal." |
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| 500 | |aHistorical publication digitized from print 2017 [by Natural Resources Canada]. |
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| 504 | |aIncludes bibliographical references. |
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| 520 | |a"The stress concentrations around an underground opening may theoretically exceed the strength of the rock mass. Deviations of the actual rock properties from those of homogeneity and perfect elasticity can, however, modify the theoretical stress distributions considerably. In addition, the known variation of the strength of rocks with the volume of the rock makes the predictability of failure due to stress concentration questionable. Several experiments have been conducted which show that failure due to compressive stress concentrations can be predicted under favourable circumstances quite accurately. However, considering failure as a stochastic phenomenon, predictions should be in terms of a probability of failure rather than a certainty. As a result of these experiments, it can be seen that the main requirements to improve the correspondence between experimental results and predicted results is to have better methods for determining the mechanical properties of rock masses"--Summary, p. 299. |
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| 546 | |aIncludes summaries in French and in German. |
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| 692 | 07|2gccst|aMining industry |
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| 692 | 07|2gccst|aRocks |
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| 692 | 07|2gccst|aPhysics |
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| 710 | 1 |aCanada. |bNatural Resources Canada. |
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| 710 | 1 |aCanada. |bDepartment of Energy, Mines and Resources. |
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| 710 | 1 |aCanada. |bMines Branch. |
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| 830 | #0|aReprint series - Dept. of Energy, Mines and Resources, Mines Branch ;|vRS 35|w(CaOODSP)9.834843 |
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| 856 | 40|qPDF|s2.34 MB|uhttps://publications.gc.ca/collections/collection_2017/rncan-nrcan/M38-8/M38-8-35-eng.pdf |
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