GEOMONITORING OF THE OPEN-PIT MINE SLOPES DURING SUBSOIL DEVELOPMENT

Authors

  • Roman Shults King Fahd University of Petroleum and Minerals
  • Marzhan Nurpeissova Satbayev University, Mining, and Metallurgical Institute named after O.A. Baikonurov, Department of Surveying and Geodesy
  • Shugyla Burlibayeva Al-Farabi Kazakh National University, Faculty of Geography and Environmental Sciences, Department of Cartography and Geoinformaticsonurov, Department of Surveying and Geodesy
  • Aliya Umirbayeva Satbayev University, Mining, and Metallurgical Institute named after O.A. Baikonurov, Department of Surveying and Geodesy
  • Turar Turumbetov Al-Farabi Kazakh National University, Faculty of Geography and Environmental Sciences, Department of Cartography and Geoinformatics

DOI:

https://doi.org/10.14311/CEJ.2024.01.0004

Keywords:

Geomonitoring, open-pit mine, vertical displacements, deformation target, geomechanical properties, slope stability

Abstract

The concept of geomonitoring and its role in developing the mining industry as a case study of the development of copper and zinc deposits in central Kazakhstan ("East Saryoba" mine) has been considered. As a crucial element of the geomonitoring concept, the control of the open-pit mine's slope stability has been examined. Geomonitoring is being treated as a combination of geodetic monitoring data and geomechanical properties of the surrounding rocks to analyze the possible slopes' collapses. The refined approach of geomonitoring has been developed to provide appropriate reliability and accuracy. The technology is based on complex knowledge about the geological structure of the object of monitoring and applying state-of-the-art geodetic methods. Research on the geomechanical properties of the open-pit mine has been carried out. The results of these studies have been used to determine the collapse zones of the slopes of the open-pit mine. The limit values for the slopes' collapse zone and inclination angle for the prospective excavation regions in the open-pit mine have been calculated using the equilibrium state equation. Those values, namely, the size of the collapse zone and the slope's inclination angle, were used for the geodetic target setup. As a case study, the displacements of these targets were measured using robotic total stations placed on the control points over the geodetic network. For the installation of both geodetic equipment during the geomonitoring design and accomplishment, the authors developed the permanent measuring station construction, which provides fast and accurate centering. The first results showed that the problem of the geomonitoring design could be solved based on geomechanical rock properties accounting and their combination with the results of geodetic measurements.

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Published

2024-04-30

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