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
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；
In this paper, summarized the rock classification methods at home and abroad, and analyzed various rock classification factors of different methods.
本文总结分析了国内外的围岩分级方法，以及各种围岩分级方法所采取的影响因素。
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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