近年来，公路交通事业迅速发展，各等级公路大量修建。同时，在各级公路的旅工 建设与运营过程中，由滑坡引起的公路破坏、边坡失稳现象却时有发生，且其往往带来 灾难性后果。特别是在黄土地区，由于黄土特殊的工程地质特性，常使修建在其上的公 路沿线发生滑坡灾害，严重影响了公路的正常运营和公路效益的发挥。因此，对高速公 路沿线的黄土滑坡稳定性影响因素进行研究，准确的对黄土滑坡进行稳定性分析与评 价，提出有效的建议和防护措旎，具有十分重要的理论与工程实际意义。 本文首先以山西省高速公路沿线黄土滑坡为研究对象，在充分掌握研究区的高速公 路沿线的地质背景、气候背景和黄土特性的基础上，将山西省公路沿线的黄土滑坡分为 四类，即黄土滑坡、黄土基岩接触面滑坡、黄土顺层滑坡和黄土切层滑坡。发现山西省 高速公路沿线的滑坡大多分布在活动性大的断裂构造带、地震活动较大、降水量较大、 人类施工开挖较大的区域；然后，对滑坡稳定性的地质综合评判法、极限平衡法、应力 应变分析法迸行了较为详细的介绍，并且以靳家庄1}}滑坡为研究对象，分别用地质综合 评判法，极限平衡法，应力应变分析法对其稳定性进行了分析与评价，并对各种方法的 评价结果进行对比分析，发现该滑坡在天然状态下基本稳定，但是在受到工程扰动，加 载或大的、持续性的降雨，该滑坡就很有可能重新复活发生滑动。

In recent years,road transportation developed rapidly and various levels highway had been constracted．At the sametime,in the building and management of all levels highway the road destroys slope loses the steady phenomenon actually sometimes occurs which causes by the landslide and oflcn brings the disaster consequence．Especially in the loess area,as a result of the loess special engineering geology characteristic,the landslide disaster o矗f,ell happens along the route ccms缸|：ted in it．seriously affectes the nOHl[1al叩口舶n and the road benefit exert．Therefore．conducts the research to the influence factors of loess landslide stability along freeway,accurate have an analysis and estimation Oll mbitity ofloess landslide along freeway,proposed the effective suggestion and the protective measm'ment,has great significance in the theory and real engineering． Firstly,we takes the loess landslides along expressway of Shah’xi province as the research object．on the basis of fully grasps the geology background、climate background of research area the along the expressway and study the loess’s characteristic of physical and mechanics．We found that it can be divided into four kinds：loess landslide,the loess landslide from bedrock contactface,the loess cl吐血培the terraneJandslide along the terrane．And their dibutrifion have evident reguhrity,most of them disaibutting along big fault and structural active belt and the flrea where have bigger earthquake activity,n加憾precipitation and serious excaviation of hunman consm碰on．Then it have a detail introduction to the geology comprehensive evaluation method,limited equilibrium method and the stress-smIin analysis method，Then have all analysis and estimation Oll stability of Jin jiazhuang No．1 landslide by the geology comprehensive evaluation method,after this carries on the contrast analysis to each method appraisal result,thus carries on a more comprehensive appraisal to this landslide stability,finally to this landslide design and co--ion,produces a suitable suggestion．