Characterisation of a landslide by its fracture system using Electric Resistivity Tomography and Pressure Probe methods
Characterisation of a landslide by its fracture system using Electric Resistivity Tomography and Pressure Probe methods
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DOI：
10.1007/s40328-017-0199-3
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发表时间：
2018-03
影响因子：
1.4
通讯作者：
K. Szokoli;L. Szarka;M. Metwaly;János Kalmár;E. Prácser;S. Szalai
中科院分区：
文献类型：
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作者：
K. Szokoli;L. Szarka;M. Metwaly;János Kalmár;E. Prácser;S. Szalai
我们研究了匈牙利南部多瑙河沿着一个缓慢移动的黄土滑坡。与其他工作相比，我们的目标是确定其断裂系统。由于黄土的成分均匀，这似乎是唯一的可能性，以获得有关滑坡及其进一步演变的信息。除了众所周知的电阻率层析成像（ERT）之外，所谓的压力探针（PreP）方法也被应用于识别所谓的致密裂缝系统。这种方法的开发是为了检测和排除机械薄弱区，这可能是从表面上看不见的，可能会发生，例如由于滑坡。断裂带已特别好地定位的ERT，使未来的破裂面的位置的预测，从而也划定的濒危地区。PreP能够提供关于骨折表面投影的非常详细的图像。这两种方法都能较好地反映滑坡区的断裂系统。地球物理学的预测也在现实中得到了验证：质量运动发生在测量后约1年半。因此，为了提供早期风险预警，避免损坏建筑物或危及人类生命，强烈建议应用ERT和PreP方法。
We have studied a slowly moving loess landslide along the River Danube in South Hungary. In contrast with other efforts, we aimed to determine its fracture system. Due to the homogeneous composition of the loess, it seems to be the only possibility to get information about the landslide and its further evolution. Beside of the well-known Electrical Resistivity Tomography (ERT) the so-called Pressure Probe (PreP) method was applied to characterise the supposedly dense fracture system. This method was developed to detect and characterise mechanically weak zones, which may not visible from the surface, and may occur e.g. due to landslides. Fracture zones had been especially well localised by the ERT, enabling the prediction of the positions of future rupture surfaces and thus also the delineation of the endangered zones. PreP was able to give a very detailed image about the surface projection of the fractures. Both methods proved to be good to characterise the fracture system of such a landslide area. Geophysical predictions have been verified also in reality: the mass movements occurred about 1½ years after the measurements. Therefore, to provide early risk warnings and to avoid damage to constructions or endangering human life, the application of the ERT and PreP methods is highly recommended.