Backfilling technology is not always used by mining enterprises, which conditioned technological and economic factors, such as the need for high rates costs processes of transporting backfill materials from daylight surface to mined-out space. This concerns underground hard coal, a strategic energy resource, in mines Ukraine. paper aims study effect leaving waste bottom rocks space longwall face without their drawing earth’s on geomechanical state surrounding face. The assessment stress rock...

The purpose of this study was to develop a methodology for integrated monitoring the rock mass state, which ensures industrial and environmental safety Central Kazakhstan region. As result research, maintaining an system geodynamic has been developed. results predicting physical–mechanical properties stress–strain state are presented. Based on data obtained, graphical–analytical dependences between most important quantitative characteristics in studied deposits scientific novelty presented...

Purpose is to improve a geophysical method of determining the boundaries ore-bearing rocks and tectonic disturbances under complex mining geological conditions while developing 3D models. Methods. models natural objects were developed on basis structural, geological-geophysical, lithological facies analysis with wide use modern seismic exploration technologies taking into consideration parameters for prediction selection optimal factors ore deposit development. Findings. The scientifically...

Introduction: The research is aimed to identify the vulnerable areas of quarry slopes through creation a stress-strain state model for rock mass at Vostochny quarry, East Saryoba field Zhi-landy Group cupriferous sandstones, as well their subsequent strengthening. Methods: based on development database containing information mining-geological, geophysical, geodetic and aerospace surveys. authors use modern geodetic, geophysical technologies scientifically predicting technogenic disasters...

In this article, variants of technological designing new mining enterprise levels for obtaining the skills engineering task execution are considered.The complex approach justification a mine's parameters is examined.The combinations quantitative and qualitative coal-face preparation works, transport, ventilation, draining-out gases, pumping, mineral deposits while keeping cost reduction in mind all stages operations presented.The obtained results allow us to lay foundations optimizing...

Purpose. The solution to one of the important problems underground mining method is substantiate cost-effective, technologically feasible and safe variants for steeply dipping low-thickness ore bodies. Methods. Mining systems are substantiated on basis a detailed analysis developed existing experiential bodies, identifying production economic disadvantages, as well their causes. Findings.As result research, pillar raise performance in system with shrinkage has been substantiated. main...

Abstract The object of the study is a rock massif represented by complex-structured ore bodies mined underground systems with open stoping or bulk caving. Deposits Kryvyi Rih iron basin are different types ferruginous quartzite, which enables application great number mining to blocks. There also barren inclusions within block extracted from along ore, and this reduces content mass. Findings comprehensive enable concluding that selective method when deposit can enhance recovery rates....

The coalification rank of the coal blend components and their caking properties initially impact coke’s quality. In part, quality coke depends on technological parameters production technology, such as method preparation, coking condition, design features ovens, technique used for post-oven treatment. Therefore, to improve quality, main attention is paid blend. petrographic analysis simplest most reliable way control indicators under industrial conditions. this paper, effect nine blends...

This paper presents an analysis of the current state processing lead-zinc ores from Koskudyk deposit (Kazakhstan). At present, polymetallic are being extracted Ridder-Sokolnoye, Zyryanovskoye, Maleevskoye, and Achisai deposits. However, reserves rich easily beneficiable depleted, supply raw materials developed deposits does not exceed 25 years. As a result, more complex difficult-to-enrich oxidized mixed involved in production, extraction non-ferrous metals these significant technological...

The progressive depletion of high-grade sulfide ores necessitates the development effective enrichment methods for oxidized lead–zinc ores. This study investigates application sulfidization flotation from Koskuduk deposit, focusing on use calcium polysulfide (CaSₓ) as an alternative to conventional sodium sulfide. Laboratory tests demonstrated that a CaSₓ dosage 700 g/t led superior recovery rates lead (53.56%) and silver (66.1%) compared Mineralogical chemical analyses confirmed dominance...

Purpose. The research aims to improve the efficiency and reliability of repair-and-renewal operations in technological wells complex mining geological conditions involved in-situ uranium leaching by identifying analyzing in-fluence geological, geochemical technical factors. Methods. is based on a comprehensive analysis field data well designs, rock characteristics ore-bearing horizons. Filtration parameters, types stripped rocks, composition working solutions peculiarities operation with...

Purpose. To ensure the stability of quarry slopes during combined development mineral deposits by determining optimal slope parameters, ensuring their long-term while minimizing volume overburden operations, and reinforcing areas in case detected fractures, both visible hidden. Methodology. The study employs a comprehensive approach that includes field geomechanical observations, mathematical modeling, analytical calculations. Modern geodetic methods, such as laser scanning Global...

Purpose. The research purpose is to develop and adapt the existing scientific-methodological, as well software information base for managing geotechnological complexes implement process approach at level of design operation mining-and-transport during opencast mining. development associated with coverage more relevant options excavating-conveying, excavating-automobile-conveying systems used in quarries. Methods. methodology involves an adequate step-by-step accounting appropriate...

This research is aimed to substantiate the optimally safe direction for mining operations developing in conditions of shear processes under hydrostatic pressure influence when Zavalivskyi Graphite Deposit. Using a graphical–analytical method, slope stability index Pivdenno–Skhidnyi open-pit walls deposit and distance placing equipment have been determined. method involves constructing calculation scheme each studied wall area based on determined parameters by algebraically adding forces...

Purpose.Study of the effectiveness topographical survey methods when solving main tasks surveying support for disturbed lands reclamation.Methods.Comparative analysis results, which was conducted with use electronic total station and a surface laser scanner during reclamation.The heap leaching dump at Belaya Gorka Site Rodnikovoye Field has been chosen as an object survey.To compare adequately, were same accuracy class.The determination values area volume tacheometric depends on discreteness...

Opencast fields mining leads to land disturbance when conducting operations and storing of overburden rocks. The timely reclaiming the disturbed lands according legislation requirements is an immediate duty subsoil user. reclamation previously mined-out space quarries refers extremely important tasks enterprise. use water management direction in assumes a quarry create reservoir through various methods rehabilitation. There are presented ways designing coastal zone created artificial...

This paper represents the results of a study chemical composition salt lakes within Burabay rock mass in eastern Kazakhstan. We sampled water and bottom deposits, geochemically analyzed lakes, performed aerial photography to geometrize them. studied linkage between rare-metal mineralization granites territory. Based on obtained data, we identified prospects survey area for rare metals. The surveys included 15 samples bottom-deposit samples. To identify source lake rocks was seven...

Abstract. Geophysical methods of rock mass survey are one the most effective ways solving various problems in mining and widely used mining, gas oil industries, as well science. They allow carrying out prospecting evaluation works remotely, to reveal structural heterogeneities, cavities, contact zones different media with rather high accuracy. At stage designing a enterprise making major decisions, it is necessary have reliable information about tectonic structure undermined adjacent massif...

Introduction: The research concerns how making cut cavities improves drilling and blasting operations as well the optimum parameters to arrange both snubber auxiliary blastholes. Methods: methods include experimental industrial activities identify depth of first-section blastholes relative second-section It also identifies while driving mine workings ore breaking in stopes with different working sections rock mass strengths broken using technique cut-cavity formation. Results Discussion:...

The methods and economic parameters of mineral mining are interrelated with the applied technological, structural organizational solutions.The individual ore bodies, their occurrence conditions totality natural ore-forming processes govern these engineering solutions.Considering relationship between such concepts as integrity, structures components a subsoil use system, basic principles defining set production for extracting minerals (or commercial component) from formulated.Due to...

Paper demonstrates the importance of substantiating reserves volumes ready for mining in extraction units, accordance with mine output capacity, averaging mode and reducing variation mined product quality. Rational methods planning operations based on innovative technological solutions to achieve high-quality ore mass uniformity terms mineralogical composition are presented. Optimization mineral scheduling is possible a comprehensive analysis existing situation determining well-founded...