SEDIMENT AND SLOP PROCESSES: GEOECOLOGICAL ANALYSIS OF THE CHYYIRCHYK SITE (SOUTHERN KYRGYZSTAN)

Abstract

The aim of this study is to identify the relationship between precipitation, displacement velocity, and the volume of moving masses on mountain slopes in southern Kyrgyzstan. The research focuses on a slope near the "Chyyrchyk" deposit, characterized by high jointing, variable moisture conditions, and the presence of loose soils. A set of engineering and geological methods was used to assess geoenvironmental conditions, including geodetic surveying, drilling, vertical electrical sounding (VES), laboratory testing of physical and mechanical soil properties, and meteorological observations from the "Gulcha" weather station. The average annual precipitation is 520 mm, with peak rainfall events up to 76 mm/day occurring in the spring–summer period, contributing to pore pressure development and filtration processes. Critical conditions are observed during this period due to the combination of saturated clay layers and jointed carbonate bedrock. Interpretation of VES profiles and borehole data confirms the presence of low-stability zones at depths of 6–12 meters. The development of the upper quarry horizon is expected to reduce geodynamic stress and mitigate landslide risks. The results emphasize the importance of considering climatic and hydrogeological factors in slope stability assessment and the design of protective measures.