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USE OF GEOPHYSICAL METHODS FOR EXPLORATION OF LANDSLIDES AREA

Tomáš Široký

Abstract

This work will deal with the use of various geophysical methods for exploration of the sliding area and the determination of the interface between the layers in the sliding area at the Bohu?ovice Quarry. For this purpose, light dynamic penetration will be carried out, which is a dynamic penetration test that is used in-situ to determine the soil resistance of penetration cone. A constant dynamic impact is used to constrain the cone, which is due to the free fall of the ram with known weight and constant fall height. Such a dynamic penetration test is an indirect test and serves as a complement to direct geotechnical exploration, as a complement to geological boreholes for example. Other used methods include geoelectric resistance methods and refracted wave methods, which use blast wave propagation through the rock environment to provide information on the rates of seismic wave spreading in individual layers. The subsequent arrival of the broken wave is registered at a certain distance from the source of the seismic energy as the time of the first deployment and recorded as the so-called watchmaker. By combining different positions of seismic energy sources and oscillator velocity sensors, a set of time-dependent propagation distances is derived from the source.

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DOI resolver: doi.org/10.5593/sgem2018/1.2/s02.095

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