Аңдатпа
The article presents the improvement of the methodology of geodetic monitoring of the state of the earth’s surface and instrument arrays of open-pit mining on the basis of a comprehensive analysis of geospatial data obtained using unmanned aerial systems (UAS). The study was carried out using the example of the Sherubai Komir coal mine located in Central Kazakhstan, Karaganda region. In contrast to the previously applied practice with separate processing of models and expert interpretation, as well as traditional geodetic observations, a reproducible technological scheme is proposed. It integrates UAS data with total station and GNSS measurements in a single coordinate system and sets strict rules for combining multi-time models at control points. Aerial photography using UAS and integration of control point coordinates allowed us to obtain high-precision digital terrain models with a spatial resolution of 2.7 cm/ pixel. The analysis of multi-time models revealed areas of significant deformations, determined the directions of displacements and geometric transformations ofthe array; profile parameterization (angles, berm widths, linear and angular deformations) made it possible to translate geometric changes into stability calculations. Based on the data obtained, recommendations are formulated to ensure the stability ofthe sides (geometric adjustment, drainage and other engineering measures). The practical implementation of the proposed methodology makes it possible to increase the efficiency of geodetic monitoring and reduce the risks of accidents during open-pit mining.