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Analysis of potential landslide processes in the Passo della Morte (Carnian Alps, Italy)
Geological Quarterly ( IF 1 ) Pub Date : 2020-09-11 , DOI: 10.7306/gq.1552
Lesław Michał Zabuski, Gianluca Marcato

Numerical simulations are provided of a potential landslide on a slope in the Passo della Morte (Carnian Alps, northeastern Italy). The slope is situated on the flank of a valley of the Tagliamento River. The danger arising from the potential landslide is associated with sliding rock damming the valley and a sudden discharge of water accumulated at the back of the dam in the case of its uncontrolled outburst. A description of the geology and geomechanical properties of the rock mass provides context for analysis of four models differing in terms of the shapes and dimensions of the solid rock blocks. The Universal Distinct Element Code (UDEC) is used to simulate the landslide of the rock mass modelled as a set of blocks interacting along discontinuities. Deformation scenarios obtained in the simulations vary depending on the model. Different, both continuous and discontinuous, deformation and failure mechanisms such as buckling, rockfall, rotation of the individual blocks and their packets, and folding, take place in each of the models analysed. Nevertheless, slip movement occurs in all four models. In addition, the simulations show that the rock mass in the deformed zones undergoes strong loosening.



中文翻译:

分析Passo della Morte(意大利卡尼安阿尔卑斯山)的潜在滑坡过程

对Passo della Morte(意大利东北部的卡尼安阿尔卑斯山)的斜坡上的潜在滑坡进行了数值模拟。斜坡位于塔利亚门托河山谷的侧面。由潜在的滑坡引起的危险与滑石筑坝山谷有关,如果爆发失控,大坝后部蓄积的水会突然排出。岩体的地质和地质力学特性的描述为分析四种在固体岩石块的形状和尺寸方面不同的模型提供了背景。通用唯一元素代码(UDEC)用于模拟岩体的滑坡,该滑坡被建模为沿不连续性相互作用的一组块的集合。在模拟中获得的变形方案取决于模型。不同,在分析的每个模型中,都发生了连续和不连续的变形和破坏机制,例如屈曲,塌方,单个块及其包的旋转和折叠。但是,在所有四个模型中都会发生滑动运动。此外,模拟结果表明,变形区内的岩体发生了强烈的松动。

更新日期:2020-09-11
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