• The theoretical result shows that the direction of plastic strain increment is determined by the direction of principal stress and stress increment.

    理论上说明塑性应变增量方向不仅应力方向有关,还与应力增量的方向有关。

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  • Precision estimation of principal direction is more objective by using principal stress deflection error proposed in this paper.

    提出应力偏角误差概念及其计算方法,使主应力方向精度评定更加真实客观

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  • The maximUm difference of failure strength among various principal stress direction is up to 30%.

    不同应力方向破坏强度最大差别可达30%。

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  • While direction of previous main faults that intersect the maximum principal stress by minor Angle also probably becomes the major migration direction of oil and gas.

    最大应力角度相交的先期主要断裂方向可能成为油气运移主要方向。

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  • Keeping the minor principal stress and medium principal stress fixed, the loading in the direction of the major principal stress is a potential stress path in practical projects.

    保持应力主应力不变主应力方向实际工程可能存在一种应力路径

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  • The direction of the major principal stress in a region remains the same from tens of meters to 4000 meters below surface.

    一个地区压应力方向地下几十至4000米大体是一致的。

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  • Results show that the displacement in horizontal direction and the maximum principal stress of core wall will increase to a larger extent if the creep effect of asphalt concrete is considered.

    分析结果表明考虑蠕变效应水平变形最大应力较大增加

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  • It is pointed out that the principal compressive stress direction of tectonic stress field in the area is nearly s - n.

    指出该区构造应力场应力方向南北向

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  • The numerical results show that the extremum direction of shear waves coincides with the direction of far-field principal stress. Furthermore, we verify the validity condition of the simplified model.

    数值结果表明横波波速极值方向岩石远场应力方向相一致,指出简化模型的适用条件

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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.

    隧洞轴线垂直最大应力钻爆开挖损伤明显大于轴线平行于最大主应力时的情况;

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  • With the increase of lateral pressure modulus, the magnitude of principal stress decreases and the direction of it is hardly changeable ;

    分析得出,压力系数增大应力量值减小,主应力方位改变

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  • With the increase of lateral pressure modulus, the magnitude of principal stress decreases and the direction of it is hardly changeable ;

    分析得出,压力系数增大应力量值减小,主应力方位改变

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