GEODETIC MONITORING METHODS OF LANDSLIDE-PRONE REGIONS – APPLICATION TO RABENOV

  • Jaroslav Braun Czech Technical University in Prague, Faculty of Civil Engineering, Department of Special Geodesy, Czech Republic
  • Pavel Hánek Research Institute of Geodesy, Topography and Cartography, v.v.i.; University of South Bohemia in České Budějovice, Faculty of Agriculture, Department of Landscape Management, Czech Republic
Keywords: digital terrain model (DTM), geodetic monitoring, global navigation satellite systems (GNSS), Rabenov landslide territory, terrestrial measurements

Abstract

The article focuses on the geodetic monitoring of the Rabenov landslide territory. The monitored slope is situated in the landscape deteriorated by mining activity in North Bohemia, West of Ústí nad Labem, in Chabařovice, a reclaimed brown coal pit. The article presents a general description of the application and accuracy of geodetic methods used to measure on the movement of material in landslides. Also, the history, the problems and the plans for reclamation of the monitored territory are briefly mentioned. The text  concentrates on the description of the network of three observed points which are formed by geotechnical instrumentations and on the description of a terrestrial and GNSS measurement in the network of monitored points. The assessment methods and the results from the eight-year phased monitoring process are also  discussed. Different methods were tested during the phases. For terrestrial measurements, standard  deviations of about 2 mm in position were made and for GNSS standard deviations of about 14 mm. Surveys  in a local grid showed that there were continuous movements of observed station points of about 10 mm per  year. The paper also discusses the use and assessment of digital terrain models in zones with on-going  artificial as well as natural changes. Models indicate elevation changes of about 2–6 m and movement of about 10,000–100,000 m3 of material.

Published
2014-05-19
How to Cite
Braun, J., & Hánek, P. (2014). GEODETIC MONITORING METHODS OF LANDSLIDE-PRONE REGIONS – APPLICATION TO RABENOV. AUC Geographica, 49(1), 5-19. Retrieved from http://aucgeographica.cz/index.php/aucg/article/view/113
Section
Original Articles