Abstract:

In landslide and slope instability studies, geophysical and geotechnical methods are applied together to investigate geological problems. This is because the application of geotechnical methods requires more time and costs compared to geophysical methods. In this research, electric resistivity tomography (ERT), seismic refraction, and geotechnical studies were carried out together in an area located in the Artuklu district of Mardin province in Turkey, where slope instabilities and rockfalls have already occurred. To determine the physico-mechanical properties, thickness, seismic velocity, and resistivity of the units constituting the slope rubble, six geotechnical boreholes were drilled in the study area and geophysical studies were carried out in three profiles. ERT data were obtained with a multi-electrode electrical resistivity system by using the 8-channel 84-electrode AGI R8 device that can measure resistivity. Also, the Schlumberger method was applied to the data. Seismic refraction measurements were performed on a profile with a length of 57.5 meters. The measurements in the area were carried out and recorded with Seismodule Controller Software Ver. of 9.28. It is believed that there are stability problems in the slope because of the lithology and the heterogeneous nature of the slope rubble unit in horizontal and vertical directions, where the slope is steep.

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