The trend today to ever increasing modelling sophistication demands that much more attention be paid by practitioners to achieving better appreciation and characterization of geology and rockmass variability, so that rock–structure interaction effects can be analysed more realistically in better calibrated models. This paper is thus directed towards focussing attention on risk-based geological characterization as basis for helping modellers and designers improve calibration of their models. A sequential approach of appropriate input parameter refinement is outlined as a path forward methodology for consistently achieving maximum reliability in modelling. Processes that are needed for identifying key controlling geological structural features and rockmass domain characteristics that may be critical influences on true rockmass behaviour are explored so that rationalization steps can be followed in model building to ensure that actual behaviour drivers are not only properly represented, but are reliably characterized through rigorous calibration. Suggestions for the use of the observational and quantitative GSI charts at various scales appropriate to specific geological domains are presented as a means for achieving such calibration. Illustration is then given of how quantification can be achieved of rock quality variability throughout the complete range of rock competence, from intact pseudo-homogeneous high strength rockmasses subject to brittle spalling, through blocky, folded or foliated rockmasses, where kinematic controls are typically of paramount importance, through to completely degraded, fault process core zones and saprolites, where material matrix strength almost entirely dominates behaviour. Guidelines are given for suggested ranges of classification applicability for use with the Hoek–Brown failure criterion.

中文翻译：

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将地质重点重新纳入岩石工程设计

当今建模复杂性不断提高的趋势要求从业者更加关注实现对地质和岩体可变性的更好理解和表征，以便可以在更好的校准模型中更真实地分析岩石-结构相互作用的影响。因此，本文旨在将注意力集中在基于风险的地质特征上，以此作为帮助建模者和设计者改进模型校准的基础。适当的输入参数细化的顺序方法被概述为在建模中始终如一地实现最大可靠性的路径前进方法。探索识别可能对真实岩体行为产生关键影响的关键控制地质结构特征和岩体域特征所需的过程，以便在模型构建中遵循合理化步骤，以确保不仅正确表示实际行为驱动因素，而且通过严格的校准可靠地表征。提出了使用适用于特定地质领域的各种尺度的观测和定量 GSI 图表的建议，作为实现此类校准的一种手段。然后说明了如何在整个岩石能力范围内实现岩石质量变化的量化，从易碎的完整伪均质高强度岩体，到块状，折叠或叶状岩体，其中运动学控制通常是最重要的，直到完全退化的断层过程核心区和腐泥土，其中材料基质强度几乎完全支配行为。给出了与 Hoek-Brown 失效准则一起使用的建议分类适用范围的指南。