Regularities of hydromechanical amber extraction from sandy deposits

Malanchuk, Yevhenii; Korniyenko, Valerii; Moshynskyi, Viktor; Soroka, V.I.; Khrystyuk, Andriy; Malanchuk, Zinovii

doi:10.33271/mining13.01.049

Cited by 26 publications

(21 citation statements)

References 26 publications

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“…where  -the viscosity ratio of the liquefied medium [10];  -the relative density of the liquefied medium; g  -kinematic coefficient of air viscosity.…”

Section: Analysis Of Models Of Motion Of An Amber Particle Under Hydrmentioning

confidence: 99%

“…where q   -characteristic air supply, 0, 000217 q    . To estimate the characteristic area on which the air from the nozzle head liquefies the soil layer, we will use recommendations for choosing the geometric parameters of the probe used for direct impact on the soil, in particular, the estimate of the distance between adjacent rods [10,15,24,29]. Assuming that the air exiting the nozzle liquefies the soil to a volume limited by two axial cylinders.…”

Section: Analysis Of Models Of Motion Of An Amber Particle Under Hydrmentioning

confidence: 99%

“…On the basis of the obtained experimental dependence, we have the following ranges of values of the oscillation frequency of the working body and the magnitude of the air flow into the amber-containing array: the oscillation frequency of the working body 28-34 Hz; the magnitude of the air flow into the array 0,003-0,006 m 3 /h, with the speed of lifting amber is the highest and is 0,09-0,12 m/s [10].…”

Section: Introductionmentioning

confidence: 95%

“…Creating the desired density of the medium depends on the flow of gas-liquid mixture into the array. Figure 2 shows the results of experimental studies of the simultaneous influence of the oscillation frequency of the working body and the magnitude of the air flow into the sand array, which demonstrate the explicit manifestation of two peak areas of maximum amber flow velocities [10].…”

Section: Introductionmentioning

confidence: 99%

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Identification of the process of hydromechanical extraction of amber

et al. 2020

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The article deals with the method of hydromechanical extraction of amber from sand deposits. The essence of hydromechanical method of amber extraction is considered. The process of extraction has been identified. The analytical expressions obtained for calculating the parameters of hydromechanical extraction of amber from sand deposits, and in particular the expression for determining the rate of emergence of an amber particle, can be used in the further engineering calculations of process parameters and process equipment. These expressions will allow to accurately substitute and with sufficient accuracy to calculate the parameters of the process of extracting amber from amber-containing deposits, as well as to set the parameters of technological equipment for the implementation of this process. MethodsThe northern regions of the Rivne region are characterized mainly by the occurrence of amber in sandy soils, characterized by water and air pores present

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“…where  -the viscosity ratio of the liquefied medium [10];  -the relative density of the liquefied medium; g  -kinematic coefficient of air viscosity.…”

Section: Analysis Of Models Of Motion Of An Amber Particle Under Hydrmentioning

confidence: 99%

Section: Analysis Of Models Of Motion Of An Amber Particle Under Hydrmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Identification of the process of hydromechanical extraction of amber

et al. 2020

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“…Moreover, reserves of mineral deposits experience their constant increase which can be explained by gradual depletion of more standardquality and practical nonavailability of new operation enterprises [3].…”

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confidence: 99%

Technological, lithological and economic aspects of data geometrization in coal mining

Dychkovskyi¹,

Lozynskyi²,

Saik³

et al. 2019

NVNGU

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Purpose. Creation of a favorable geomechanical situation and estimation of economical parameters at the mining area accord ing to the selection of the relevant technical and technological justification and operating modes of the mechanized fastening based on the planning of zones of variable stresses. Methodology. Methods of mathematical modeling for determination of loads for fastening of mechanized complexes, experi mental studies on stresseddeformed state of the rock mass are applied, on the basis of which rational parameters of mining and management mining pressure are formed. findings. Using the developed method of data geometrization, the lithological and geological structure of the rock mass was restored on the intersections of the surrounding wallface two of preparatory workings. On this basis, a change in the stressstrain state of a rock massif is established. This makes it possible to set the loadings on the fastening of mechanized complexes. This ap proach establishes the mathematical dependencies that determine the zones of elevated and lowered mining pressure. For the measure of transition, the socalled coefficient of lithological difference is defined. This parameter provides the possibility not only to evaluate the geomechanical situation at the extraction site, but also to establish a marginal zone for the development of reserves with traditional and radical technologies. An economic evaluation of the proposed technical and technological measures has been held separately. The results of the research will allow justifying the effective mining of coal reserves in particular geological condi tions. originality. The dependence of the lithological difference formation of rocks and stresses of the rockmass to create conditions for the development of the coal reserves has been established. An economic evaluation of the decisions was made using the well known methodology of UNIDO. Practical value. Obtained results of experimental studies with precision sufficient for practical application can be used to deter mine the parameters of underground mining and provide an opportunity to extract the coal reserves at an economically suitable level. The proposed technological solutions were checked in practical conditions for the development of the coal reserves at the site of a DTEK company mine.

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Some aspects of modern vision for geoenergy usage

et al. 2019

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The paper represents analysis, which have helped to determine tendencies of usage secondary and renewable resources by means of their utilization within the closed ecological complex while implementing integrated cogeneration systems belonging to various sources. Both the current state and prospects of secondary and renewable resources use within the closed complex of a mining enterprise have been considered. Relying upon philosophical approaches as for the formation of a viewpoint concerning responsibility of the modern society to future generations, tendencies to form energy production and energy consumption on the basis of alternative radical technologies have been proposed. The authors have put forward tendencies to change coal mining and coal use while generating the raw material from the abandoned and out-of-balance reserves. Chances to use cogeneration systems by various energy sources have been considered. Formation of the unified power and chemical system to improve economic and ecologic expediency of the proposed measures is the key tendency of energy perfection as well as minimization of impact on the underground mine environment and on the surface to prolong activities of dying mining territories and to reduce social tension.

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Regularities of hydromechanical amber extraction from sandy deposits

Cited by 26 publications

References 26 publications

Identification of the process of hydromechanical extraction of amber

Identification of the process of hydromechanical extraction of amber

Technological, lithological and economic aspects of data geometrization in coal mining

Some aspects of modern vision for geoenergy usage

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