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Support of underground excavations in hard rock

Support of underground excavations in hard rock,E. Hoek,P. K Kaiser,W. F Bawden

Support of underground excavations in hard rock   (Citations: 191)
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Published in 1995.
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    • ...The GSI was developed by Hoek et al. (1995) based on the appearance of a rock mass and its structure...

    Zulfu Gurocak. Analyses of stability and support design for a diversion tunnel at the...

    • ...As mentioned before, numerical tools need to be used along with the empirical design approach and in recent years, the generalized Hoek‐Brown strength criterion (Hoek et al. 2002) is widely used and is now available in various numerical analysis tools, in association with the Geological Strength Index (GSI) system (Hoek et al. 1995)...
    • ...The GSI system, developed by Hoek et al. (1995), is one of them...
    • ...in which the RMR value (RMR76) has been assumed to be equal to the GSI value (Hoek et al. 1995), for GSI [ 25...

    M. Cai. Rock Mass Characterization and Rock Property Variability Consideration...

    • ...These were: (1) an empirical relationship by Hoek and Brown (1980); (2) comparisons to a detailed laboratory study by Medhurst and Brown (1998) investigating the effects of sample size on triaxial tests for medium rank coals; and (3) the Geological Strength Index (GSI) introduced by Hoek et al...

    T. Gentzis. Stability Analysis of a Horizontal Coalbed Methane Borehole in the San...

    • ...General characteristics of identified engineering geological units are listed in Table 1. Average geomechanical characteristics of the engineering geological units in the area were assessed using some empirical rock mass classification systems, such as RQD (Deere et al. 1967), RMR (Bieniawski 1989), GSI (Hoek et al. 1995, Hoek 2007) and Q-system (Barton et al. 1974)...
    • ...In Eq. 21, Vpu is penetration rate divided by average cutter thrust or gross thrust/cutter (mm/rev/MN) and rca is evaluated on the basis of the correlations between the strength parameter ‘‘s’’ of the Hoek and Brown strength criterion and the quality index of the rock RMR (Hoek et al. 1995)...

    J. Hassanpouret al. TBM Performance Analysis in Pyroclastic Rocks: A Case History of Karaj...

    • ...For example, when the structure being analyzed is much larger than the rock blocks formed by the discontinuities, the rock mass may be simply treated as an equivalent continuum for the analysis (Brady and Brown 1985; Brown 1993; Hoek et al. 1995; Zhang 2005)...
    • ...Fig. 1 Simplified representation of the influence of scale on the type of rock mass behavior (after Hoek et al. 1995) 392 L. Zhang...
    • ...Over the years, many rock mass classification systems have been proposed and used in engineering practice, including the RQD (Deere 1967), the rock mass rating (RMR) (Bieniawski 1976, 1989), tunneling quality index (Q) (Barton et al. 1974; Barton 2002), geological strength index (GSI) (Hoek et al. 1995, 1998), and rock mass index (RMi) (Palmstrom 1996a, b). Some systems are developed by modification of existing ones to suit specific ...
    • ...For example, when RMR is used for rock mass strength estimation, the rock mass should be assumed completely dry and a very favorable discontinuity orientation should be assumed (Hoek et al. 1995, 2002)...

    Lianyang Zhang. Estimating the Strength of Jointed Rock Masses

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