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箭丰尾滑坡是较为罕见的超大型顺层基岩古滑坡病害,严重威胁坡脚国道与高速公路的运营安全。首先介绍其复杂的地形地貌特征、坡体结构特征、地质构造特征和水文地质特征等地质基础条件;然后结合现场地质踏勘成果,对山体变形、边坡变形、路面变形和抗滑工程结构破坏等滑坡变形破坏特征进行分析;并进行了分条分块的区划研究,同时采用试验、经验和反算相结合的手段,综合确定了主要滑动带岩土物理力学参数,分析了滑坡当前的稳定状态,结果与实际较为吻合,并据此对滑坡发展趋势进行预测,为该滑坡工程治理措施的确定和实施提供了科学依据,也可以为类似滑坡病害治理提供参考。
The arrow Fengtai landslide is a relatively rare ancient landslide disease with super-large basement bedrock, which seriously threatens the operational safety of the national highway and highway. First of all, the paper introduces its complicated geomorphic features, structural features of the slope, geological structure and hydrogeological features, and other geologic conditions. Then, combining with the results of on-site geological prospecting, the paper analyzes the deformation of mountain, deformation of the slope, The deformation and failure characteristics of the landslide are analyzed. And the zonation and division of the landslide are carried out. At the same time, the physical and mechanical parameters of the main landslide are comprehensively determined through the combination of experiment, experience and backcalculation. The current stability of the landslide The results are in good agreement with the actual ones. Based on this, the prediction of the landslide development trend is predicted, which provides a scientific basis for the determination and implementation of the landslide control measures. It also provides a reference for the similar landslide control.