陕北某高速公路拓家沟斜坡稳定性分析评价及加固设计

在调查研究斜坡的工程地质条件、斜坡特征的基础上，对清子高速公路K28+900~K29+250段拓家沟斜坡稳定性进行了详细工程地质勘察，对该斜坡失稳的形成机制、诱发因素等进行了系统分析；同时，对其稳定性进行了分析和验算，得出斜坡在天然、饱水状态两种工况下均处于失稳变形状态的评价；最后，提出了对该斜坡削方、抗滑桩及截排水的加固治理方案。从竣工后的现状可知，加固治理措施可行，斜坡稳定性良好。

Stability Analysis and Evaluation and Reinforcement Design of Tuojiagou Slope of a Highway in Northern Shanxi

Based on the investigation and study of the engineering geological conditions and characteristics of the slope, a detailed engineering geological investigation of the stability of Tajiagou slope in K28+900~K29+250 section of Qingjian-Zichang Expressway was carried out and the formation mechanism, inducing factors of the instability mechanism of the slope were systematically analyzed. Meanwhile, the stability is analyzed and checked. It is concluded that the slope is in the state of instability and deformation under both natural and saturated conditions. Finally, the reinforcement and treatment schemes of slope cutting, anti-slide pile and drainage interception are put forward for the slope. From the current situation after construction, the reinforcement and treatment measures are feasible and the slope stability is good.