By considering the variations of the cohesion and the Angle of internal friction for rock, the parameter studies on the stress distribution around one and two tunnels were carried out.

考虑岩石粘聚力和内摩擦角的变化，进行了一个和二个隧道周围的应力分布的参数研究，内摩擦角？

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The results show that the internal friction Angle of rock has importance affect on the displacement of surrounding rock for deep roadway when in-situ stress and support resistance all are certain.

分析结果表明，在地应力和支护阻力一定时，岩石的内摩擦角对深埋巷道围岩位移的影响最为明显。

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Extreme type I isn′t equal to be probability distribution of cohesion and internal friction angle of clinosol and residual cohesive soil surrounding rock.

极值I型分布不适宜作为坡残积黏土质围岩黏聚力、内摩擦角的概率分布；

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