| Popis: |
An designed monitoring system was used in this paper to monitor the typical landslide in Zhenjiang area. The process of landslide about accumulative displacement, deformation rate and acceleration has been analyzed. The process of landslide was divided into three phases including an initial deformation phase, a uniform deformation phase and an accelerated deformation phase. The numerical simulation results show that the destructive model of landslide is creeping-tension cracking. Special topography provides a good free face for landslide. Moreover, under the influence of water cycles, the mechanical strength of the silty clay decreases affecting the slope stability. After rainfall infiltration, the transient saturation region is formed, resulting in the decreasing of effective stress, and producing the hydrostatic pressure and dynamic pressure which point to the free face. Therefore, the sliding force increases and the resistance force decreases. |
