Based on the method of risk assessment, the fuzzy analysis is introduced to establish the classification of surrounding rock stability.
在风险评价方法的基础上，结合模糊理论，提出了围岩稳定性的风险评价分级方法。
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。
The artificial neural network provides us a new theoretical method on the stability classification of roadway surrounding rock.
人工神经网络理论的出现为人们研究巷道围岩稳定性分类提供了一种新的理论方法。
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