道真至新寨高速公路某滑坡稳定性分析与评价

针对贵州省道真至新寨高速公路和溪至流河渡段（K159+850～K160+080）在建设过程中线路旁出现的不稳定滑坡，进行稳定性分析。通过工程地质调绘及钻探，查明了该滑坡体工程地质和水文地质条件。根据其变形情况，对滑坡的成因、变形特征及稳定性进行了分析，并且对该滑坡进行了稳定性定量评价。经稳定性计算后，发现该滑坡在天然工况和降雨工况下稳定安全系数分别为1.037，0.925，在降雨的情况下滑坡处于不稳定状态。最后，提出了相应的工程治理措施，为治理该滑坡设计和施工提供参考。

Analysis and Evaluation of Stability of a Landslide along Daozhen-Xinzhai Highway

For the section from Hexi to Liuhedu (K159+850～K160+080) of Daozhen-Xinzhai Highway in Guizhou Province, instable landslide came out along the line, affecting the construction and operation of the Highway seriously, thus the stability analysis was required. Depending on engineering geological surveying and mapping, the engineering geological and hydrogeological conditions of the landslide was found out by drilling; the genesis, deformation characteristics and stability of the landslide was then analyzed according to its deformation; furthermore, quantitative evaluation on the stability of landslide was carried out and, with the calculation, it was found that the safety factors of landslide in natural and rainfall conditions were 1.037 and 0.925, respectively, showing the landslide was instable in case of rainfall. Finally, the control measures were proposed to ensure the normal operation of highway.