定义 中文名称：岩石分类 英文名称：rock classification 定义：根据岩石的强度、裂隙率、风化程度等特性指标，将其划分成各种类别或等级。 应用学科： 水利科技（一级学科）；岩石力学、土力学、岩土工程（二级学科）；岩石
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...围岩分类；岩体力学参数估算；Hoek-Brown失效准则[gap=1333]Key words: RMi method; parameter optimization; rock classification; estimation of mechanical parameters of rock mass; Hoek-Brown failure criterion..
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surrounding rock classification 围岩分类 ; 围岩分级
ultramafic rock classification 超镁铁质岩分类
Rock Classification Hammer 岩石测试锤
Rock Mass Classification 岩石力学分类 ; 岩石质量分类 ; 岩体分级
RMR rock classification RMR岩体分类
tunnel rock classification 隧道围岩分类
In practice, it indicates that the karst rock classification for this tunnel is reasonable, which can be taken as a reference for other similar projects.
实践表明，本工程岩溶围岩分级是合理的，对其他同类工程可提供借鉴。
This paper systematically summarizes the results of researching the soft rock classification, attribution and judgement of China′s coal mine drifts;
本文系统地总结了我国煤矿巷道在软岩分类、软岩属性及软岩判定等方面的研究成果；
Tunnel surrounding rock classification history mainly on railways was introduced and analyzed; the surrounding rock classification is the basic data for tunnel construction.
围岩分级是隧道建设的基础资料，对以铁路为主的隧道围岩分级历史作简要回顾。
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