Abstract
The article deals with the study of geotechnical conditions in Kryvbas. The major factors of technogenic changes in an ecological state of the geological environment during development of ferruginous quartzite deposits have been determined. The big mining complex in Kryvbas is a complex natural-technogenic geosystem with the mainly irreversible use of raw material resources the renewable ability of which is quite low. One of the main factors of the environmental impact of PGTS Kryvbas is the formation of signi