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首页> 外文期刊>ISPRS International Journal of Geo-Information >Shallow Landslide Susceptibility Mapping in Sochi Ski-Jump Area Using GIS and Numerical Modelling
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Shallow Landslide Susceptibility Mapping in Sochi Ski-Jump Area Using GIS and Numerical Modelling

机译：基于GIS和数值建模的索契跳高地区浅层滑坡敏感性分析。

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摘要

The mountainous region of Greater Sochi, including the Olympic ski-jump complex area, located in the northern Caucasus, is always subjected to landslides. The weathered mudstone of low strength and potential high-intensity earthquakes are considered as the crucial factors causing slope instability in the ski-jump complex area. This study aims to conduct a seismic slope instability map of the area. A slope map was derived from a digital elevation model (DEM) and calculated using ArcGIS. The numerical modelling of slope stability with various slope angles was conducted using Geostudio. The Spencer method was applied to calculate the slope safety factors (Fs). The pseudostatic analysis was used to compute Fs considering seismic effect. A good correlation between Fs and slope angle was found. Combining these data, sets slope instability maps were achieved. Newmark displacement maps were also drawn according to empirical regression equations. The result shows that the static safety factor map corresponds to the existing slope instability locations in a shallow landslide inventory map. The seismic safety factor maps and Newmark displacement maps may be applied to predict potential landslides of the study area in the case of earthquake occurrence.
机译：大索契山区，包括位于高加索北部的奥林匹克跳台滑雪区，总是遭受山体滑坡。低强度的风化泥岩和潜在的高强度地震被认为是导致跳台滑雪复杂地区斜坡失稳的关键因素。这项研究旨在绘制该地区的地震斜坡失稳图。坡度图是从数字高程模型（DEM）导出并使用ArcGIS计算的。使用Geostudio进行了各种坡度的边坡稳定性的数值模拟。应用Spencer方法计算边坡安全系数（Fs）。拟静力分析用于考虑地震影响的Fs计算。发现Fs与倾斜角之间具有良好的相关性。结合这些数据，获得了边坡失稳图集。还根据经验回归方程绘制了Newmark位移图。结果表明，静态安全系数图对应于浅层滑坡清单图中现有的边坡失稳位置。在地震发生的情况下，地震安全系数图和Newmark位移图可用于预测研究区域的潜在滑坡。

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