结果表明，随矿岩崩落开采，崩落区下方岩层出现较大范围的塑性破坏区和拉破坏区。
The results show that the great plastic yield areas and pull failure areas are formed in the base structure with caved area extends.
同时还用被动破坏理论阐述了群桩外部塑性区土中的应力状态。
Finally, according to passive failure theory, the stress SLATE in plastic soil zone outside cluster of piles is presented.
以库仑定律作为强度破坏准则，破碎区边界上的弹性介质和它内部的塑性介质的破坏条件分别采用了不同的主应力函数。
Different functions for principal stress were used as elastic medium failure conditions at the boundary with the crushing zone and plasticity within the latter based on Coulomb rule.
通过建立三维有限元弹塑性力学模型，模拟计算了水平矿柱上各盘区的屈服破坏过程。
A three-dimensional finite element model was constituted to simulate the yield process of the macro-horizontal jamb in the tectonic stress field caused by continuous mining.
通过建立三维有限元弹塑性力学模型，模拟计算了水平矿柱上各盘区的屈服破坏过程。
A three-dimensional finite element model was constituted to simulate the yield process of the macro-horizontal jamb in the tectonic stress field caused by continuous mining.
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