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| 岩体工程分类 | |||
| 岩体工程分类法把工程岩体质量的优劣分为有限和有序类别的方法。作为评价岩体工程稳定性,进行工程设计和施工管理的基础的工程岩体分类，一般包含三个方面的工作： 1. 侬据研究对象确定分类因素，构成分级指标作为分级的判据； 2. 合理选择用分级指标组成的分级模型，得到划分档次的标准, 3. 根据工程需要确定分级数目。分类的结果要经过实践检验 | |||
| engineering classification of rock mass: 4 phrases in 2 subjects |
| Hydroelectric power stations | 2 |
| Technology | 2 |
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