- 1. Methodology for determining the heat distribution in disc brakes of mine hoisting machines
- (Content №5 2024)
- ... which occur after repeated operating braking and cooling of the device. In this case, when using the formula for determining the temperature on the brake rim surface, the sample length, the relative velocity ...
- Created on 29 October 2024
- 2. Mathematical model for heat transfer during underground coal gasification process
- (Content №5 2024)
- ... face advance velocity and the duration of gasification column mining. Methodology. To detect the temperature fields in the coal seam and gas, depending on the displacement length of the phase transition ...
- Created on 29 October 2024
- 3. Modeling of drilling tool vibration in the process of drilling blast wells
- (Content №5 2024)
- ... R. (2014). The velocity synchronous discrete Fourier transform for order tracking in the field of rotating machinery. Mechanical Systems and Signal Processing, 44(1-2), 118-133. https://doi.org/10.1016/j.ymssp.2013.03.026. ...
- Created on 29 October 2024
- 4. On the issue of load’s external ballistics under low-speed transportation
- (Content №4 2024)
- ... by time-varying coefficients. The applied three-dimensional approach to the dynamic problem with an initial velocity from a UAV, in the presence of frontal and side wind loading, made it possible to use ...
- Created on 28 August 2024
- 5. Determination of technological parameters for hydromechanical amber extraction in the Polissia region of Ukraine
- (Content №3 2024)
- ... to be Q = 72 m³/hour. The optimal pipeline diameter was selected as D = 0.3 m, and the optimal slurry velocity was determined to be v0 = 2.75 m/s. The methodology for determining the technological parameters ...
- Created on 28 June 2024
- 6. Optimal parameters of blasting destruction in the Ben Azouz quarry based on study of strength limestone rock
- (Content №3 2024)
- ... the compressive strength of the rock (UCS, Uniaxial Compression Strength) based on simple regression is the model containing P-Velocity as an independent variable with a coefficient of determination R2 ...
- Created on 28 June 2024
- 7. Determining the parameters of the functioning for a nonlinear ballistic system in a real external environment
- (Content №2 2024)
- ... influence of the projection of the velocity function on the ordinate axis in relation to the component on the abscissa axis is introduced. The problem is reduced to the solution of a related system of ...
- Created on 01 May 2024
- 8. Influence of relaxation on filtering microflows under harmonic action on the layer
- (Content №2 2024)
- ... Universytetu. 2024, (2): 025 - 031 https://doi.org/10.33271/nvngu/2024-2/025 Abstract: Purpose. Investigation of the velocity fields of non-equilibrium fluid filtration in a layer under harmonic action ...
- Created on 01 May 2024
- 9. Three-dimensional density model of the mantle beneath the Ukrainian shield
- (Content №2 2024)
- ... using a basic set of one-dimensional seismic tomographic velocity models calculated for 21 mantle domains in the depth range from 50 to 2,600 km. The process of converting the P-wave velocity model into ...
- Created on 01 May 2024
- 10. Method of controlling the volume of combustion products at different boiler loads
- (Content №1 2024)
- ... excess. The mechanism of such an effect due to the increase in the quantity and velocity of flue gases is suggested. A parameter determining the volume of flue gases produced per unit calorific value of ...
- Created on 29 February 2024
- 11. Efficiency and seismic safety of constructing underground structures in complex rock masses
- (Content №6 2023)
- ... Geometry and Water on Velocity of Detonation of Heavy ANFO Explosive. International Symposium on Earth Science and Technology, (pp. 102-107). Fukuoka, Japan: Kyushu University. Retrieved from https://www.researchgate.net/publication/369658191. ...
- Created on 23 December 2023
- 12. Data analysis solutions to improve blasting efficiency in mining
- (Content №6 2023)
- ... reinforcement model. Mining Technology, 117(4), 161-167. https://doi.org/10.1179/174328609X417260. 2. Barton, N. (2007). Rock Quality, Seismic Velocity, Attenuation and Anisotropy. Taylor & Francis ...
- Created on 23 December 2023
- 13. Theoretical model of random freight flow distribution in the conveyor transport line of the coal mine
- (Content №6 2023)
- ... calculated objectively on the basis of the reliable output data of random freight flow in the conveyor transport line, taking into account the velocity of minerals transportation, including a perfect theoretical ...
- Created on 23 December 2023
- 14. Liquefaction of industrial zone against earthquake loading using laboratory and field measurements
- (Content №5 2023)
- ... for shear wave velocity in different types of soil were collected and studied, where the majority of these correlations necessitated the use of standard penetration tests in the field. Indeed, two boreholes ...
- Created on 27 October 2023
- 15. Optimization of technological parameters of airlift operation when drilling water wells
- (Content №3 2023)
- ... average effective values of the output parameters: the density of the water-air mixture, its upward flow rate, and the air flow rate at a given velocity of the upward flow of water as it approaches the ...
- Created on 27 June 2023
- 16. Patterns of air mixture movement in the operating area for the annular ejector of pneumatic transportation system
- (Content №2 2023)
- ... mixture flows mixing in the transport pipeline. In the work, the velocity distribution is also examined for dispersed phase and air phase of air mixture during its loading and accelerating in the transport ...
- Created on 28 April 2023
- 17. Modeling of drilling water supply wells with airlift reverse flush agent circulation
- (Content №1 2023)
- ... in the upstream. The effective values of the airflow rate, the density of the water-air mixture and the velocity of its upward flow are established. A method for estimating the effective values of technological ...
- Created on 25 February 2023
- 18. Determining the parameters of stratification cavity in rock mass to extract mine methane
- (Content №6 2022)
- ... to mining area; and stope advance velocity as well as its length. Practical value. Based upon the method by Professor O.V.Savostyanov, an algorithm has been proposed to define possible mine methane accumulations ...
- Created on 25 December 2022
- 19. Seismic geotraverse "Granit" (Ukrainian part). Reanimation
- (Content №4 2022)
- ... velocity model of the crust and upper mantle beneath the Donbas Foldbelt (East Ukraine). Tectonophysics, 371(1-4), 81-110. https://doi.org/10.1016/S0040-1951(03)00211-7. 4. Stovba, S.N., Tolkunov, ...
- Created on 29 August 2022
- 20. Complex measurement of parameters of iron ore magnetic separation based on ultrasonic methods
- (Content №3 2022)
- ... of attenuation, absorption and scattering are introduced. Findings. The dependence of the phase velocity of asymmetric Lamb waves on the wall thickness of the magnetic separator was obtained. As a result ...
- Created on 29 June 2022