Acta Geodynamica et Geomaterialia

Title: CASE STUDY OF THE TENSOR ANALYSIS OF GROUND DEFORMATIONS EVALUATED FROM GEODETIC MEASUREMENTS IN LANDSLIDE AREA
Authors: Szafarczyk Anna and Gawalkiewicz Rafal
DOI: 10.13168/AGG.2016.0003
Journal: Acta Geodynamica et Geomaterialia, Vol. 13, No. 2 (182), Prague 2016
Full Text: PDF file (5.0 MB)
Keywords: landslide, strain tensor, geodetic measurements
Abstract: The series of geodetic measurements made in the area affected by deformations allows us to mark deformation indicators, the most important of which is, for the majority of constructions, horizontal strain. The strains can be horizontal, tensile or compressive. Tensile strains cause the most serious damage in apartment buildings making fissures, cracks and – in extreme cases - even construction catastrophe. Depending on the accepted surveying technology, it is possible to determine the values of strains with smaller or greater accuracy. The article presents the method and results of the measurement of the deformation in the fragments of a landslide (landslide of a natural slope in Milówka and landslide of the open cast mine Bełchatów). The surveying points were stabilized in the form of the measurement network called rectangular geodetic rosette. Based on the GPS measurement of the rosettes horizontal deformations on the directions of the stabilized sides were made. In the further stage the components of the surface strain tensor were marked, which made it possible to determine the direction and values of the extreme deformations.