Geotechnical parameters of limestone from the Topola Formation in the area of Topola Village, Kavarna Municipality (NE Bulgaria)

The area around Topola Village is affected by landslide processes, which are the major factor in the formation of the modern relief. The terrains affected by the landslides are mainly composed of sediments of the Topola Formation. In the engineering-geological studies carried out in the region, main attention was paid to the geotechnical parameters of aragonite sediments and calcareous clays of the Topola Formation. The purpose of this article is to define the geotechnical parameters of the micritic limestones from this formation, which have a major stabilizing role on the lands affected by landslide processes. Тhe mean values of bulk density, compressive strength and tensile strength of these rocks were determined. The quadratic deviation, the coefficient of variation, and the calculation value of the individual parameters, with confidence at 90%, 95% and 99%, respectively, were also calculated.