Regional Technogenic Changes in Ecogeodynamic Conditions of the Development of Iron Ore Deposits in Kryvbas

Rudko, G. I.; Yakovlev, Ye.O.

doi:10.31996/mru.2018.2.43-50

МРУ

2018

DOI: 10.31996/mru.2018.2.43-50

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Regional Technogenic Changes in Ecogeodynamic Conditions of the Development of Iron Ore Deposits in Kryvbas

G. I. Rudko¹,

Ye.O. Yakovlev²

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

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Post-mining of the Ukraine’s mining regions as a new direction for the environmentally safe use of mineral resources

Rudko¹,

Яковлєв²

2020

МРУ

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The growth of market requirements for socio-economic and environmental parameters of mineral resources in most developed (“old”) mining areas (MA) of Ukraine has led to the closure of mines and quarries, including by the method of “wet conservation” (autorehabilitation uncontrolled flooding). This process is most actively developing in the MA of the Donbas, including in areas affected by armed conflict. In most developed EU countries, the decommissioning of coal mines (Ruhr, Lorraine, Wales), which have large depths (up to 1,0–1,5 km) and area (thousand sq. km) of minefields, is a research and production complex of post-mining (PM), which is based on scientific and technical measures to prevent dangerous changes in the geological environment (GE) - subsidence of the earth’s surface, flooding of lands, release of explosive and toxic gases, limiting the leakage of polluted water. In addition, the PM provides for the transformation of part of the mine workings into a hydraulic filtration system of mine water retention at a depth of 250–350 m in order to prevent the flow of pollutants into freshwater horizons and river network, preservation of regional aquicludes, degassing of mining space. In general, the set of PM measures is aimed at maintaining the balance and protective potential of the GE as a mineral and landscape base of the biosphere. In this regard, the article compares the protective potential of the GE of the Chornobyl accident zone and the Donbas region, as well as performs an expert assessment of the environmental protection potential of the PM in the leading MA of Ukraine. It is shown that a new model of mineral resourses use, structure of geological exploration works, scientific substantiation of maximum allowable changes of GE at closing of “old” and formation of new MA, improvement of environmental monitoring based on GIS technologies and remote sensing of the Earth are needed.

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Post-mining of the Ukraine’s mining regions as a new direction for the environmentally safe use of mineral resources

Rudko¹,

Яковлєв²

2020

МРУ

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Comprehensive assessment of the earth’s surface state disturbed by mining and ways to improve the situation: case study of Kryvyi Rih Iron-ore Basin, Ukraine

Bazaluk,

Petlovanyi,

Sai

et al. 2024

Front. Environ. Sci.

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IntroductionComplex mineral mining leads to critical earth’s surface disturbance and environmental pollution from industrial waste. This research aims to comprehensively study, assess and show the current scale of the earth’s surface disturbances in the largest mining region of Ukraine – the Kryvyi Rih. Iron-ore Basin and suggests ways to improve the situation based on backfill technologies for the earth’s surface rehabilitation and industrial waste utilization.MethodsTo identify the forms of surface disturbance, their parameters, and spatial location, satellite images of the region, government statistical data, and a geographic information system software suite were studied. An analysis of the effectiveness of existing reclamation measures for technogenic voids in the region was carried out, and a new concept of surface restoration was proposed using beneficiation tailings, which are difficult to utilize in the region.ResultsIt has been determined that the contribution of the Kryvyi Rih Iron-ore Basin to waste generation is 92.08% of the total volume of waste accumulations in Dnipropetrovsk Oblast and 65.5% in Ukraine as a whole, amounting to 10.7 billion tons. It is determined that 65.25% of the total disturbed land area is industrial waste, 34.76% – quarry cavities and mine failure zones, occupying 49% of the Kryvyi Rih city area. An analysis of waste accumulation density in allotted areas shows that per 1 m2 of land area, on average, 183.5 tons of dump waste rocks and 73.5 tons of beneficiation tailings are placed. Disposal of beneficiation tailings is recognized as a priority, because their utilization is slower, occupy the largest area, creating a risk of dams breaching and intense dusting from tailings dams surface, threatening the environment and public health. For the first time in Ukraine, a concept for the earth’s surface rehabilitation for various industrial purposes has been developed based on paste backfill technologies.DiscussionPaste backfill technology implementation is prioritized in the central and northern parts of the city, which can dispose of at least 65–70 million tons of waste in cavities and reclaim about 200 ha of land. The research results are valuable for the development of strategies or programs to overcome the technogenic-ecological crisis in the city. The rehabilitated earth’s surface can be usefully involved in various infrastructure projects for the development of the industrial and economic potential of an industrial city such as Kryvyi Rih.

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Regional Technogenic Changes in Ecogeodynamic Conditions of the Development of Iron Ore Deposits in Kryvbas

Cited by 2 publications

References 1 publication

Post-mining of the Ukraine’s mining regions as a new direction for the environmentally safe use of mineral resources

Post-mining of the Ukraine’s mining regions as a new direction for the environmentally safe use of mineral resources

Comprehensive assessment of the earth’s surface state disturbed by mining and ways to improve the situation: case study of Kryvyi Rih Iron-ore Basin, Ukraine

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