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以四川省杨家塝缓倾岩质滑坡为例,从滑坡各特征要素的角度,分析了该类滑坡的变形破坏机制,并采用GeoStudio建立稳定性数学模型,利用Slople模块对比分析了该滑坡在不同降雨条件下的稳定性状态。结果表明,缓倾岩质滑坡的变形破坏受多种因素共同作用,而降雨是其主要的诱发因素;降雨对滑坡前缘稳定性的影响大于滑坡后缘,且滑坡稳定性的削弱在不同降雨时期表现出不同的特点,即降雨前期对滑坡稳定性的削弱程度最大,其次是降雨后期,降雨中期对滑坡稳定性削弱程度最小。
Taking the gentle dip landslide in Yangjiazhuang of Sichuan Province as an example, the deformation and failure mechanism of this type of landslide is analyzed from the perspective of various characteristic factors of landslide. The stability mathematical model is established by GeoStudio. Condition of the stability of the state. The results show that the deformation and failure of the gentle slope landslide are affected by many factors, and rainfall is the main predisposing factor. The effect of rainfall on the stability of the landslide is greater than that of the landslide, and the stability of landslides is weakened under different rainfalls The period shows different characteristics, that is, the pre-rainfall period has the greatest weakening of landslide stability, followed by the late rainfall period, and the mid-rainfall period has the least weakening of landslide stability.