INTEGRATION OF MOBILE PHOTOGRAMMETRIC SYSTEMS AND MATHEMATICAL METHODS IN MONITORING THE CONDITION OF UNDERGROUND MINING WORKINGS

ABSTRACT Currently, the actual position and cross-sections of underground mining workings are represented in the form of plans and sections. Mine surveying is traditionally carried out using total stations, with cross-sections of mining workings measured every 5 meters. However, this method may lead to ambiguous or incomplete results due to the limited amount of collected data. The use of standard geodetic instruments for surveying mining workings requires significant time and financial costs, while the obtained information is often limited to data collected only at discrete points. Moreover, traditional measurement methods capture geometric changes only at measurement points, which imposes restrictions on the subsequent preparation of graphical materials. To address this issue, we have conducted a series of studies aimed at evaluating the potential of photogrammetric systems for creating 3D models of underground mining workings. As part of a collaboration with JSC "Hydrospetsstroy," photogrammetric surveys were conducted over the course of one year in the tunnels of the Gissarak HPP, which allowed us to achieve positive results in solving the assigned task.