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| Σύστημα Βαθμολόγησης Πετρωμάτων (Rock Mass Rating - RMR)× | Κριτήριο Αστοχίας Hoek-Brown× | |
|---|---|---|
| Πεδίο | Μεταλλευτική Μηχανική | Μεταλλευτική Μηχανική |
| Οικογένεια | Process / pipeline | Process / pipeline |
| Έτος προέλευσης≠ | 1973 | 1980 |
| Δημιουργός≠ | Zbigniew T. Bieniawski | Evert Hoek and E. T. Brown |
| Τύπος≠ | Empirical classification for geotechnical engineering | Empirical criterion for rock mass strength prediction |
| Θεμελιώδης πηγή≠ | Bieniawski, Z. T. (1989). Engineering rock mass classifications. John Wiley & Sons. ISBN: 978-0-471-60437-4 | Hoek, E., & Brown, E. T. (2002). The Hoek-Brown failure criterion and GSI: 2018 update. Journal of Rock Mechanics and Geotechnical Engineering, 10(2), 445-463. link ↗ |
| Εναλλακτικές ονομασίες≠ | RMR, Bieniawski Classification, RMR89 | Generalized Hoek-Brown Criterion, HB Criterion |
| Συναφείς | 3 | 3 |
| Σύνοψη≠ | The Rock Mass Rating (RMR) system, developed by Zbigniew Bieniawski starting in 1973, is an empirical classification that characterizes rock mass quality and estimates mining and civil engineering behavior. RMR combines five measurable geotechnical parameters into a single index ranging from 0 to 100, where higher values indicate stronger, more stable rock masses. It is the most widely used rock classification system worldwide for underground mining design. | The Hoek-Brown Criterion, developed by Evert Hoek and E. T. Brown starting in 1980, is an empirical failure criterion that predicts the shear strength of rock masses as a function of confining pressure. It accounts for rock quality (via the Geological Strength Index, GSI) and thus bridges laboratory rock mechanics and field behavior. The criterion is widely used in mining for slope stability, pillar design, and stress analysis. |
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