Ore-controlling factors as the basis for singling out the prospective areas within the Syrymbet rare-metal deposit, Northern Kazakhstan

Issayeva, Lyudmila; Togizov, Kuanysh; Duczmal-Czernikiewicz, Agata; Kurmangazhina, Madina; Muratkhanov, Daulet

doi:10.33271/mining16.02.014

Cited by 17 publications

(21 citation statements)

References 27 publications

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“…A significant number of publications are devoted to the issue of reducing losses and dilution of caved ore from the stoping block [49][50][51][52][53]. Scientists of Kryvyi Rih National University (Ukraine) have made a significant contribution concerning ore drawing under caved rocks [54][55][56][57][58][59][60][61].…”

Section: Analysis Of Researches and Publicationsmentioning

confidence: 99%

Enhancement of the technology of caved ore drawing from the ore deposit footwall “triangle”

Pysmennyi,

Chukharev,

Peremetchyk

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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In mining iron ore, over 60% of underground mines at Kryvyi Rih iron ore basin apply a system with the bulk caving of ore and overlying rocks. However, when the deposit dip is 45-60 degrees, application of this mining system leads to losses of about 30-40% of the footwall ore. Available methods of the loss reduction result in an increase in production costs or a decrease in the iron content in the mined ore mass. After analyzing the mechanism of forming the figure of drawing, it is proposed to change its parameters without significant costs due to the use of an inclined plane and an overcompacted ore layer. The presented study enables stating that with an increase in the inclined plane angle from 45 to 75 degrees the draw crater radius increases from 2 to 7.5 m, and a decrease in the factor of first loosening of ore leads to an increase in the radius of the crater to 10 m. Thus, for the first time it is proved that a decrease in the first loosening factor leads to the increased semi-minor axis of the ellipsoid of drawing and the width of the active drawing area, which will reduce losses of caved ore when drawing it from the stoping block in the footwall area. It is established that in order to minimize losses and dilution of ore when using level mining systems, the drawpoint should be located in the block sill at a distance ensuring formation of the 20 to 25 m high ellipsoid of drawing. In case of an overcompacted 22 m thick ore layer, it is possible to significantly reduce ore losses from 14 to 10% and ore dilution from 16 to 9%, thereby enhancing ore mass extraction indices without additional costs.

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Section: Analysis Of Researches and Publicationsmentioning

confidence: 99%

Enhancement of the technology of caved ore drawing from the ore deposit footwall “triangle”

Pysmennyi,

Chukharev,

Peremetchyk

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…To the depth of 170 m the deposit was mined during 15 years, then 10 years later they started underground mining operations. The period of simultaneous OPMO and UMO made 8 years [16].…”

Section: Analysis Of Researches and Publicationsmentioning

confidence: 99%

Scientific and technical problems of transition from open pit to combined technologies for raw materials mining

Stupnik,

Kalinichenko,

Kalinichenko

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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In Kryvyi Rih iron ore basin, long-term and intensive mining of deposits applying open pit methods have resulted in significant areas disturbed by open pits, dumps and tailings storage facilities. Hundreds of thousands of hectares of fertile arable land are already unsuitable for agriculture and sometimes for living. Thousands of tonnes of dust from dumps and tailing ponds deteriorate the surrounding nature every year and pollute the atmosphere in mining basins. Industrial ore breaking in open pits using bulk blasting causes emissions of a significant amount of harmful dust and carcinogenic substances. The environmental situation in open pit mining areas is often close to critical. In addition, bulk blasting forms a seismic wave, which in some cases destruct civil buildings and industrial facilities. The article proposes ways of gradual transition from mining mineral deposits by open pit methods to environmentally friendly technologies of open pit-underground and underground mining. It is established that such transition is a forced and at the same time choiceless way of developing mining areas, in particular Kryvyi Rih iron ore basin. The paper notes that the main problems of this transition include geomechanical stabilization of the rock massif during construction of underground mines in areas of possible impacts of open pit fields. The paper develops the fundamental study of the problems of controlling the stress-strain state of the massif during transition from the open pit to combined technology of deposit mining. Technologies of combined mining that involve formation of a transition belt with backfilling the worked-out space with compound mixtures are studied as well. It is proved that development of theoretical foundations for controlling the stress-strain state of the massif during transition from the open-pit to combined technology of deposit mining, study and design of technological solutions that contribute to transition to open pit-underground and underground mining, is an urgent scientific, technical and practical problem of great importance.

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“…To successfully study and interpret a large amount of geo logical information, to determine the geological nature of anomalies generated by a particular object, it is necessary to examine this object on geophysical maps [23]. The main method that has proven itself in studying the deep structure of an area is gravity prospecting [24].…”

Section: Introductionmentioning

confidence: 99%

Formation of prospecting criteria for copper-porphyry deposits based on the construction of reference models

Bolatbekuly,

Umirova,

Zakariya

et al. 2024

Nauk. visn. nat. hirn. univ.

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Purpose. To study the modern methodology for forming a list of mineragenic factors and prospecting signs of ore fields and deposits of copper-porphyry type based on reference objects and model constructions on the example of deposits of Jungar-Balkhash folded region. Methodology. The methodology for identifying the desired factors and criteria is based on the collection and analysis of published and historical data, formation of digital databases using raster and vector geological maps. It also includes the use of modern, advanced specialized technologies and software packages for geophysical surveys and remote sensing data. According to the adopted technology, the results of aerospace methods are used, which include aerial photography, space radar imaging, infrared and spectrozonal surveys and others. The research involves interpretation of WorldView-3 satellite images. Findings. A list of metallogenic characteristics describing potential copper-porphyry mineralization within the study area has been compiled. Using the Spectral Evolution PSM-3500 infrared spectrometer, characteristic areas of secondary changes in copper-porphyry systems have been identified. ASTER spectral satellite radiometer data have identified mineral spectra, iron hydroxides, propylitic associations, areas of quartzite formation and silicification. By interpreting WorldView-3 satellite images, digital files have been obtained identifying iron ore minerals (hematite, goethite), secondary quartzites (advanced argillizites), varieties of sericite and other clay minerals, silicon, carbonates and propylites (chlorite, epidote). Based on interpretation, “parquet” fracturing in granite bodies and in the area of volcanogenic and sedimentary strata development has been identified, as well as structural lines indicating the strike of rock layers. Originality. Using the example of an exploration area based on the analysis of a priori and up-to-date data, the nature of a set of relevant criteria and signs for predicting and prospecting has been determined, aimed at increasing the reliability and accuracy of formation of geological-geophysical models. Practical value. The collected and systematized geophysical data can serve as a basis for developing plans for further geological exploration, identifying promising areas, determining the required volumes and methods of geophysical surveys. They can also contribute to the increase in estimate of reserves and production at mining sites. The prepared models are intended for preliminary assessment of known and newly discovered ore deposits of various types, as well as for determining the directions of geological exploration in the areas of prospecting the Northern Pribalkhash.

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Ore-controlling factors as the basis for singling out the prospective areas within the Syrymbet rare-metal deposit, Northern Kazakhstan

Cited by 17 publications

References 27 publications

Enhancement of the technology of caved ore drawing from the ore deposit footwall “triangle”

Enhancement of the technology of caved ore drawing from the ore deposit footwall “triangle”

Scientific and technical problems of transition from open pit to combined technologies for raw materials mining

Formation of prospecting criteria for copper-porphyry deposits based on the construction of reference models

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