1976年泾阳南塬大面积提水灌溉以来,沿泾河右岸发育27处,50余起黄土层内滑坡,造成严重的经济损失和人员伤亡,使得台塬面积不断缩小,水土流失加剧.通过对南塬黄土滑坡多次野外考察和滑坡测量,研究了泾阳南塬黄土滑坡类型与发育特征.依据滑坡发生力学机制对南塬黄土滑坡进行了分类,包括黄土流滑、黄土滑动和黄土崩塌.南塬黄土滑坡具有高陡的后壁,后缘裂缝普遍发育,具有演化性与群体性分布特征.其中裂缝发育及高陡的滑坡后壁是造成滑坡演化的重要因素.裂缝的发育还是滑坡群体性分布的内在动力机制. Since 1976, a large area of ​​water supply irrigation in the southern plateau of Jingyang County has developed 27 landslides along the right bank of the Jing River and more than 50 landslides in the loess layer, causing serious economic losses and casualties, making the area of ​​the Taiwan Plateau shrinking and soil and water erosion intensified. Several loess landslides and landslide surveys in the South Plain were conducted to study the types and development characteristics of loess landslides in the southern plateau of Jingyang.The loess landslides in the South Plain were classified according to the mechanics of landslide occurrence including loess slippery loess slides and loess landslides The loess landslide has a high and steep back wall, and the trailing edge cracks generally develop with the characteristics of evolution and mass distribution. The development of fractures and the high and steep landslide posterior walls are the important factors that cause the landslide evolution. Internal dynamics of distribution.