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Hydrogeological model and hydraulic behaviour of a large landslide in the Italian Western Alps

机译：意大利西部阿尔卑斯山大型滑坡的水文地质模型和水力行为

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摘要

A study of the large, deep-seated Rosone landslide (Italian Western Alps) is presented. A large amount of geological and geomechanical data has been collected in this area, due to the presence of various villages and man-made structures, and an automatic monitoring system was installed in December 2000. Since its installation, this system has been showing a continuous slow movement with periodical accelerations that can be correlated to heavy rainfall events. A hydrogeological model has been developed to study the influence of rainfall events on the pore pressure variations inside the rock slope. The structural characteristics, inclinometric and piezometric measurements, statigraphic and seismic profiles, geomorphologic information, water balance and chemical analyses of the main springs in the slope have been taken into account to consider this problem. A numerical hydraulic investigation, based on a continuum equivalent model of the landslide, has then been carried out using the FLAC3D computer code. Some preliminary results, which highlight the role of permeability and the porosity values of the rock mass on the pore pressure variations during heavy rainfall, are shown in the paper.
机译：提出了对大型深层Rosone滑坡（意大利西部阿尔卑斯山）的研究。由于存在多个村庄和人造结构，该地区已收集了大量的地质和地质力学数据，并于2000年12月安装了自动监测系统。自安装以来，该系统一直显示出连续的状态。缓慢的运动和周期性的加速度，可能与强降雨事件有关。已经开发出一种水文地质模型来研究降雨事件对岩石边坡内孔隙压力变化的影响。考虑到该问题，已考虑了边坡主要温泉的结构特征，倾角和测压测量，地层和地震剖面，地貌信息，水平衡和化学分析。然后，使用FLAC3D计算机代码，基于滑坡的连续等效模型进行了数值水力研究。本文显示了一些初步结果，这些结果突出了渗透率和岩体孔隙率值对大雨期间孔隙压力变化的作用。

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