青兰公路陕西境K103～K113沿线滑坡特征及成因机制

阐述了基于滑坡物质组成及滑面的发育位置和运动方式两种划分黄土滑坡的形式。根据两种分类形式，通过现场勘察对青（岛）兰（州）公路陕西境滑坡发育密集的K103～K113段30个滑坡进行了分析研究，认为沿线黄土滑坡属黄土-第三系红粘土-泥岩接触面滑坡，部分兼黄土-泥岩滑坡类型，并归纳了滑坡的几点活动特征。最后以地质分析为基础，得出了沿线黄土滑坡的破坏模式为滑移-拉裂-剪切型，地下水及地表水是滑坡活动的诱发因素也是主要因素。

Characteristics and formation mechanism of landslides along section K103 - K113 of the freeway from Qingdao to Lanzhou

Based on the material structure of the landslides, and the developing positions and motion modes of landslides, two types of loess landslides are described. On the basis of the two types, 30 landslides are studied through the field investigation along the section K103 - K113 of the freeway from Qingdao to Lanzhou in Shanxi province. It is thought that some loess landslides along the freeway basically belong to the interface landslides with the loess-Tertiary system clay-mudstone, and the some others are accompanied with the loess-mudstone landslides. Some activity characteristics of the landslides are summarized. According to the geological analysis, it is concluded that the failure mode of the landslides along the freeway is the mode with slide-extension-shear, and the inducing factors as well as the dominant factors are the ground water and surface water.