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Author: Admin | 2025-04-27
Stability graph [10] (b) Dilution-based stability graph [12]. Figure 7. Case study #12: (a) Modified stability graph [10] (b) Dilution-based stability graph [12]. Figure 8. Diagrams of the ore’s external dilution rate vs. HR/N′: (a) Right Sidewall (HW) (b) Left Sidewall (FW) (c) Crown. Figure 8. Diagrams of the ore’s external dilution rate vs. HR/N′: (a) Right Sidewall (HW) (b) Left Sidewall (FW) (c) Crown. Figure 9. Summary and comparative diagram of the ore’s external dilution rate vs. HR/N′. Figure 9. Summary and comparative diagram of the ore’s external dilution rate vs. HR/N′. Figure 10. Proposed dilution-based stability graph approach. Figure 10. Proposed dilution-based stability graph approach. Table 1. Historic overview of the basic stability graph modifications according to Suorineni [13]. Table 1. Historic overview of the basic stability graph modifications according to Suorineni [13]. PeriodDevelopments1980–1985Introduction of the stability graph, 26 case histories (Mathews et al. [8])1985–1990Calibration of the stability graph factors and zones, 175 cases (Potvin [10])1990–1995Tentative cable bolt support line (Potvin and Milne [15])Redefinition of unstable/cave (supportable transition boundary and cable bolt support line) (Nickson [9])First partial statistical definition of the stable/unstable zone (Nickson [9])Proposed dilution lines added to the stability graph (Scoble and Moss [16])1995–2000Redefinition of the transition zones (Stewart and Forsyih [17])Modified the gravity factor for sliding failure (Hadjigeorgiou, Leclaire and Potvin [18])Second partial statistical definition of the stable/unstable zones (Hadjigeorgiou, Leclaire and Potvin [18])Introduction of the radius factor, RF (Milne, Pakalnis and Lunder [19])Calibration of the proposed dilution lines ELOS (Clark and Pakalnis [20])Modified the gravity factor for foot walls with shallow dips of 20])Proposed the volumetric index (Germain and Hadjigeorgiou [21])First complete statistical analysis of a stability graph using the Bayesian likelihood statistic (Suorineni [22])Introduction of the fault factor (Suorineni [20]; Suorineni et al. [23])Modified the stress factor to include tension and stress-dependent transition zones (Diederichs and Kaiser [24])2000–2005Expanded the database to about 400 cases and modified the stability graph zones from the Australian database (Trueman et al. [25]; Mawdesley et al. [11])Second complete statistical analysis using logistic regression, 483 case histories (Trueman and Mawdesley [26])Time-dependent stability graph (Suorineni, Henning and Kaiser [27])2005–2010Numerical modeling
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