Аңдатпа
Abstract. This study evaluates building deformation in Kentau, Kazakhstan, a post-mining urban area affected by subsidence and flooded underground workings. Two geodetic observation cycles were conducted in May and October 2025 for 14 residential and administrative buildings using GNSS-referenced total station measurements. Reflective markers installed on building corners were observed with a Leica TS10 total station, while local control networks were tied to the city GNSS framework and adjusted in a unified WGS84-based coordinate system. Inter-cycle displacements were then assessed using positional and vertical errors and compared with normative tolerance levels. Valid repeated measurements were obtained for 26 markers on 11 buildings. Approximately 85% of the markers showed planimetric displacement magnitudes below 20 mm, and about 70% showed vertical displacements within ±5 mm. Localized anomalies were recorded at individual markers, including planimetric displacement up to 74.8 mm and vertical displacement values of +616.3 mm and –122.7 mm. The three-marker analysis of building No. 10 indicated differential vertical movement between corners. The results show that GNSS-referenced total station monitoring can provide useful building-scale deformation information in post-mining urban areas, while detected outliers require marker verification, engineering inspection, and continued multi-cycle monitoring.