关键词: 网纹红土, 变形分区, 毕肖普法, 滑坡稳定性

Abstract: The reticulated red soil is a widely distributed soil in the hilly area of central Hunan. The existence of the vertical micro-cracks in the soil makes the surface water easy to infiltrate, and the dry-wet alternate environment accelerates the expansion and the shrinkage deformation of hydrophilic minerals, which has a significant impact on the stability of the slope. In the process of surveying a reticulated soil landslide, the slide body was divided into plane zones based on deformation signs. The slope stability was evaluated by the region so that the landslide survey can be more refined and the amount of engineering support can be reduced. On the basis of the stability analysis of the existing sliding surface of the uniform soil landslide, the stability check of the deeply seated potential sliding surface of the slope can effectively avoid the failure of landslide control. Based on the simplified Bishop method, the stability analysis of a reticulated red clay landslide is performed. The slope is at the marginally stable state, and heavy rainfall will induce the slope to produce a larger and deeply seated overall sliding.

Key words: Reticulate Red Clay, Deformation Zoning, Bishop Method, Landslide Stability