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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Some pitfalls and misuses of rock mass classification systems for mine design
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Some pitfalls and misuses of rock mass classification systems for mine design

机译：岩体分类系统在矿山设计中的一些缺陷和误用

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Rock mass classification systems are extensively used in rock engineering design work, and mine design is no exception. Among the systems most widely used for mining-related design work are the NGI Q-system (Barton et al, 1974), the RMR system (Bieniawski, 1976), the MRMR system (Laubscher and Taylor, 1976) and, more recently, the GSI system (Hoek et at., 1998). Classifying the rock mass is widely seen as being the fieldwork required to characterize the rock mass and enable the application of empirical design methods associated with the different classification systems. This paper argues that it is fundamentally important to recognize the distinction between rock mass characterization and rock mass classification. These two processes should, in most cases, be separated from each other. Rock mass characterization should be used to determine the intrinsic properties of the rock mass independently of the application; i.e. independent from the infrastructure to be designed, the size, shape, and orientation of the excavation(s) or pillar(s), etc. Rock mass characterization should also be compatible with most classification systems and empirical design methods to be used. Rock mass characterization is the background fieldwork required to perform rock mass classification and/or engineering design work. Rock mass classification is the subsequent step to the characterization, and an integral part of the design process. Parameters that vary according to the design, such as the relative orientation of geological structures compared to the opening or the mine-induced stresses, should be calculated as part of the rock mass classification and design process, rather than during the rock mass characterization process. The failure to distinguish between rock mass characterization and rock mass classification can lead to major design errors and poor results.
机译：岩体分类系统广泛用于岩石工程设计工作中，矿山设计也不例外。 NGI Q系统（Barton等，1974），RMR系统（Bieniawski，1976），MRMR系统（Laubscher和Taylor，1976）是最广泛用于采矿相关设计工作的系统。 GSI系统（Hoek等，1998）。对岩体进行分类被广泛认为是表征岩体并允许应用与不同分类系统相关的经验设计方法所需的现场工作。本文认为，认识到岩性表征与岩体分类之间的区别从根本上很重要。在大多数情况下，这两个过程应相互分开。应当使用岩体特征来确定岩体的固有特性，而与应用无关。即，与要设计的基础设施无关的是，挖掘或支柱的尺寸，形状和方向等。岩体表征也应与大多数分类系统和要使用的经验设计方法兼容。岩体表征是进行岩体分类和/或工程设计工作所需的背景野外工作。岩体分类是表征的后续步骤，也是设计过程的组成部分。根据设计而变化的参数（例如，与开口相对的地质结构的相对方向或矿山引起的应力）应作为岩体分类和设计过程的一部分进行计算，而不是在岩体表征过程中进行计算。无法区分岩质特征和岩质分类会导致重大的设计错误和较差的结果。

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