A large number of landslides occur in North-Eastern Italy during every rainy period due to the particular hydrogeological conditions of this area. Even if there are no casualties, the economic losses are often significant, and municipalities frequently do not have sufficient financial resources to repair the damage and stabilize all the unstable slopes. In this regard, the research for more economically sustainable solutions is a crucial challenge. Floating composite anchors are an innovative and low-cost technique set up for slope stabilization: it consists in the use of passive sub-horizontal reinforcements, obtained by coupling a traditional self-drilling bar with some tendons cemented inside it. This work concerns the application of this technique according to the observational method described within the Italian and European technical codes and mainly recommended for the design of geotechnical works, especially when performed in highly uncertain site conditions. The observational method prescribes designing an intervention and, at the same time, using a monitoring system in order to correct and adapt the project during realization of the works on the basis of new data acquired while on site. The case study is the landslide of Cischele, a medium landslide which occurred in 2010 after an exceptional heavy rainy period. In 2015, some floating composite anchors were installed to slow down the movement, even if, due to a limited budget, they were not enough to ensure the complete stabilization of the slope. Thanks to a monitoring system installed in the meantime, it is now possible to have a comparison between the site conditions before and after the intervention. This allows the evaluation of benefits achieved with the reinforcements and, at the same time, the assessment of additional improvements. Two stabilization scenarios are studied through an FE model: the first includes the stabilization system built in 2015, while the second evaluates a new solution proposed to further increase the slope stability.

由于该地区特殊的水文地质条件，在每个雨季期间，意大利东北部都会发生大量滑坡。即使没有人员伤亡，经济损失也往往是巨大的，市政当局经常没有足够的财政资源来修复破坏和稳定所有不稳定的斜坡。在这方面，研究在经济上更具可持续性的解决方案是一项严峻的挑战。浮动复合材料锚是一种用于稳定边坡的创新且低成本的技术：它包括使用被动的水平副钢筋，该副钢筋是通过将传统的自钻钢筋与水泥内部的一些筋结合而获得的。这项工作涉及根据意大利和欧洲技术法规中所述的观测方法应用该技术，并且主要推荐用于岩土工程的设计，尤其是在高度不确定的现场条件下进行时。观察方法规定了设计干预措施，同时使用监视系统，以便根据在现场获得的新数据在工程实现期间纠正和调整项目。案例研究是Cischele的滑坡，这是中度滑坡，发生于异常多雨的降雨之后，于2010年发生。2015年，安装了一些浮动复合材料锚以减缓运动，即使由于预算有限，这些锚也不足以确保斜坡的完全稳定。由于同时安装了监视系统，现在可以比较干预前后的现场状况。这样可以评估使用增强件所获得的收益，同时还可以评估其他改进措施。通过有限元模型研究了两种稳定方案：第一种包括2015年建造的稳定系统，而第二种则评估了为进一步提高边坡稳定性而提出的新解决方案。