... tunnel surrounding rock 隧道围岩 surrounding rock classification 围岩分类 stability of surrounding rock 围岩稳定 ...
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surrounding rock classification evaluation 围岩类别评定
surrounding rock classification early warning 围岩预警
Classification of surrounding rock 围岩分类
surrounding rock stability classification 围岩稳定性分类的
surrounding rock masses stability classification 围岩稳定分类
classification of surrounding rock stability 围岩稳定性分类
Surrounding rock mass classification 围岩分类
1) For the surrounding rock classification, it is found that the wave speed method has obvious shortage. This especially is for phyllite.
1)对围岩分类而言,发现基于弹性波速的分类方法存在很大的缺陷,特别是对软弱千枚岩,就弹性波速度这一个指标,就很难客观地得出正确的结论。
参考来源 - 山区隧道围岩分类与洞口边坡稳定性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Stduy on index selection of surrounding rock classification for cohesive soil tunnel;
围岩质量分类是隧道及地下工程领域重要的技术工作之一。
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。
The classification of surrounding rock was mainly adopted for the stability of the cavern in order to analyze the stability of surrounding cavern and evaluate developed rule of rock explosion.
对洞室稳定性主要采取了多种方法的围岩分类，在此基础上分析了洞周块体稳定性并评价了岩爆发生发育规律。
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