A numerical computation test shows the possibility of inferring the principal axes of tectonic stress from the p, b, t axis of earthquakes with randomly oriented fault planes.

通过数值试验论证了利用多个断层面随机取向的地震的P、B、t轴推断构造应力主轴方向的可能性。

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An example shows that the long axis of the casing pressure figure directs to the minimum principal compression stress.

应用实例表明，套管径向压力载荷图形的长轴指向地应力场的最小主压应力方向。

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When the direction of tunnel axis is vertical to the maximum principal stress, the depth of BEDZ is larger than that of which the direction of tunnel axis is parallel to the maximum principal stress.

隧洞轴线垂直于最大主应力时的钻爆开挖损伤明显要大于轴线平行于最大主应力时的情况；

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