DETERMINATION OF WATERLOGGING ZONES AND THEIR FACTORS USING NON-DESTRUCTIVE MONITORING METHODS AT HISTORICAL AND ARCHITECTURAL MONUMENTS

• Published in: International Multidisciplinary Scientific GeoConference SGEM Vol. 2024; no. 1.1; pp. 143 - 150
• Main Authors: Cherevko, Iryna, Kril, Tetiana, Bezrodnyi, Dmytro, Popov, Serhii
• Format: Conference Proceeding
• Language: English
• Published: Sofia Surveying Geology & Mining Ecology Management (SGEM) 01.01.2024
• Subjects: Accidents; Cold water; Construction; Cultural heritage; Electric fields; Engineering; Environmental monitoring; Gardens & gardening; Geological processes; Geology; Groundwater; Groundwater levels; Historic sites; Historical structures; History of engineering; Inflow; Low resistance; Massifs; Memorials & monuments; Monitoring; Monitoring methods; Monuments; Networks; Nondestructive testing; Sinkholes; Soil; Soil analysis; Soil resistance; Three dimensional models; Tomography; Underground structures; Water supply; Water supply systems; Water temperature; Waterlogged ground; Waterlogging; Kyiv Ukraine; Ukraine
• ISSN: 1314-2704
• DOI: 10.5593/sgem2024/1.1/s02.21

The paper presents the results of determining waterlogging zones and their factors using non-destructive monitoring methods on the territory of the Kyiv-Pechersk Lavra Metropolitan's Garden. The research was carried out using the methods of electrotomography, natural electric field with the use of subsurface sounding radars. The results of electrotomography were interpreted using two- and three-dimensional models. The territory of the Upper Lavra Metropolitan's Garden is a combination of complex engineering and geological conditions and technogenic development, which creates conditions for the development of dangerous engineering and geological processes and emergency situations. In terms of danger, this area belongs to the unstable sites for the preservation of world heritage historical monuments. The last accident on the water supply networks occurred in October 2022. It caused sinkholes on the surface, increasing the groundwater levels, and significant destruction of the underground structure of historical importance - the Metropolitan's cellar. The existence of an anomalous cupola of leakage (soils of low resistance) observed in the western and central part of the area was established, which is probably the center of soil massif overwetting as a result of the heating network accident. The analysis of the adapted 3D model based on the results of non-destructive methods of the geological environment state monitoring allowed us to indirectly establish the places of unsatisfactory engineering networks (cold water supply) technical condition, where the waterlogging zone was recorded. The research has confirmed the presence of a man-made water inflow (leakages) from main water supply networks in the right part of all profiles, as a constant source and factor for waterlogging the soil foundations of architectural monuments - Monastery walls, Kushnyka tower, etc.