Detection of landslide geometry using ERT, A case study: the tunnel of Kermanshah-Khosravy rail way
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عنوان دوره: نوزدهمین کنفرانس ژئوفیزیک ایران
نویسندگان
1زمین شناسی، دانشگاه پیام نور واحد پرند ، استان تهران، ایران
2موسسه ژئوفیزیک دانشگاه تهران
3تربیت مدرس دانشکده علوم گروه زمین شناسی
چکیده
Most of the mountainous regions of the semi-arid regions in Iran, are geologically and topographically susceptible to landslides. Landslide is considered as one of the known natural hazards and in many cases, it can leads to significant economic losses and even fatalities. In many of cases, recent landslides often occurs as a result of old landslide reactions; Therefore, in order to get the insight of the landslide processes characteristic for a particular area, investigating of the old landslides in more details, is of great importance. In this study, 2-D Electrical Resistivity Tomography (ERT) survey along eight profiles were carried out over the landslide mass using a pole-dipole configuration in a landslide area, located in one of the road tunnels in the Kermanshah at Iran which is geologically characterized by limestone, siltstone, shale and marls so as to reconstruct of landslide geometry and detection of sliding surface. The results yielded useful information about the geometry and characteristics of the landslide and indicated the presence of the raptures in the studied tunnel axis using satellite images and matching them with the resistivity sections.
کلیدواژه ها
 
Title
Detection of landslide geometry using ERT, A case study: the tunnel of Kermanshah-Khosravy rail way
Authors
asghar azadi, sadegh moghadam, erfan sadeghi
Abstract
Most of the mountainous regions of the semi-arid regions in Iran, are geologically and topographically susceptible to landslides. Landslide is considered as one of the known natural hazards and in many cases, it can leads to significant economic losses and even fatalities. In many of cases, recent landslides often occurs as a result of old landslide reactions; Therefore, in order to get the insight of the landslide processes characteristic for a particular area, investigating of the old landslides in more details, is of great importance. In this study, 2-D Electrical Resistivity Tomography (ERT) survey along eight profiles were carried out over the landslide mass using a pole-dipole configuration in a landslide area, located in one of the road tunnels in the Kermanshah at Iran which is geologically characterized by limestone, siltstone, shale and marls so as to reconstruct of landslide geometry and detection of sliding surface. The results yielded useful information about the geometry and characteristics of the landslide and indicated the presence of the raptures in the studied tunnel axis using satellite images and matching them with the resistivity sections.
Keywords
Landslide, Electrical Resistivity Tomography (ERT), tunnel, Kermanshah, Iran