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滑坡发生的概率主要取决于自身的地质条件和当地降雨强度,一般由坡体内部水位变化引发自身结构破坏导致滑动。本文运用FLAC3D软件,对皋兰山I3和I4滑坡在自然态与饱水态两种状态下位移和塑性形变进行模拟,分析两种状态下自身结构对其诱发滑动的程度,为滑坡的预警提供技术参考。结果表明:在天然状态下,滑坡体自身结构发生微弱塑性变形,对滑坡稳定性未造成较大影响;在饱水态下,自身结构部分发生明显的塑性变形,无法继续保持其稳定。
The probability of landslide depends on its own geological conditions and local rainfall intensity, usually caused by changes in the internal water level within the slope caused by structural damage caused by sliding. In this paper, the FLAC3D software is used to simulate the displacement and plastic deformation of the Gaolan Mountain landslides I3 and I4 in both natural and saturated states, and the degree of induced slippage of the two structures under their own conditions is analyzed to provide an early warning for the landslide Technical reference. The results show that under natural conditions, the landslide body itself undergoes weak plastic deformation, which has no significant effect on the stability of the landslide. Under saturated water conditions, obvious plastic deformation occurs in the structural part of the landslide body and the stability of the landslide body can not be maintained.