We present the articles of the third issue of scientific journal "Mining Science and Technologyβ (Russia) for 2024:
Using hydrodynamic simulation based on a multicomponent (compositional) model, a comparative analysis of the development of a gas-condensate reservoir by vertical and horizontal wells was carried out, the results of which revealed the advantage of reservoir development by vertical wells compared to horizontal wells in terms of maximum condensate recovery.
For more information, see the article:
π₯ Tomskiy K.O., Ivanova M.S., Nikitin E.D., Rudykh L.A. Application of hydrodynamic simulation on the basis of a composite model to improve the efficiency of gas-condensate reservoir development. Mining Science and Technology (Russia). 2024;9(3):221-230. https://doi.org/10.17073/2500-0632-2023-10-176 π₯
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#inenglish #MST #condensate #field #condensate_recovery #gas #geomechanics #geophysics #oil #well #deposit #modeling
Using hydrodynamic simulation based on a multicomponent (compositional) model, a comparative analysis of the development of a gas-condensate reservoir by vertical and horizontal wells was carried out, the results of which revealed the advantage of reservoir development by vertical wells compared to horizontal wells in terms of maximum condensate recovery.
For more information, see the article:
π₯ Tomskiy K.O., Ivanova M.S., Nikitin E.D., Rudykh L.A. Application of hydrodynamic simulation on the basis of a composite model to improve the efficiency of gas-condensate reservoir development. Mining Science and Technology (Russia). 2024;9(3):221-230. https://doi.org/10.17073/2500-0632-2023-10-176 π₯
Subscribe to the journal's Telegram channel:
πt.iss.one/MinSciTechπ
#inenglish #MST #condensate #field #condensate_recovery #gas #geomechanics #geophysics #oil #well #deposit #modeling
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We present the articles of the first issue of scientific journal "Mining Science and Technologyβ (Russia) for 2025:
Scientists conducted laboratory tests according to the International Society for Rock Mechanics (ISRM) methodology to investigate fracture toughness at interfaces between gypsum stone and sand-cement mortar. The fracture toughness coefficient K_IC was determined using cylindrical specimens 40 mm in diameter and 150 mm long with a V-shaped notch, tested in three-point bending. Results showed that the average KIC value for the rock-concrete interface was only 0.323 MPaΓβm β 4 times lower than for pure gypsum (1.327 MPaΓβm) and 2.5 times lower than for concrete specimens (0.858 MPaΓβm). Interestingly, the formation of a calibrated fracture during testing caused a 30% increase in the internal mechanical loss factor Qβ»ΒΉ, revealing new possibilities for fracture toughness evaluation using resonance methods. These findings have important practical implications for the design, operation and monitoring of industrial mining facilities containing rock-concrete interfaces.
For more information, see the article:
π Voznesenskii Π.S., Ushakov E.I., Kutkin Ya.O. Fracture toughness of rock-concrete interfaces and its prediction based on acoustic properties. Mining Science and Technology (Russia). 2025;10(1):5-14. https://doi.org/10.17073/2500-0632-2024-10-316
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#InEnglish #MST #rocks #concrete #gypsum #flintstone #interface #properties #fracturetoughness #acoustics #study #testing #acousticmeasurements #elasticwaves #velocity #losses #prediction #strain #rockmechanics #geophysics #ISRM #KIC #Qfactor #monitoring #strength #failure #cement #science #technology #RSFgrant #nondestructivetesting #resonancemethod #mining #engineeringsolutions
Scientists conducted laboratory tests according to the International Society for Rock Mechanics (ISRM) methodology to investigate fracture toughness at interfaces between gypsum stone and sand-cement mortar. The fracture toughness coefficient K_IC was determined using cylindrical specimens 40 mm in diameter and 150 mm long with a V-shaped notch, tested in three-point bending. Results showed that the average KIC value for the rock-concrete interface was only 0.323 MPaΓβm β 4 times lower than for pure gypsum (1.327 MPaΓβm) and 2.5 times lower than for concrete specimens (0.858 MPaΓβm). Interestingly, the formation of a calibrated fracture during testing caused a 30% increase in the internal mechanical loss factor Qβ»ΒΉ, revealing new possibilities for fracture toughness evaluation using resonance methods. These findings have important practical implications for the design, operation and monitoring of industrial mining facilities containing rock-concrete interfaces.
For more information, see the article:
π Voznesenskii Π.S., Ushakov E.I., Kutkin Ya.O. Fracture toughness of rock-concrete interfaces and its prediction based on acoustic properties. Mining Science and Technology (Russia). 2025;10(1):5-14. https://doi.org/10.17073/2500-0632-2024-10-316
Subscribe to our Telegram channel:
π t.iss.one/MinSciTech π
#InEnglish #MST #rocks #concrete #gypsum #flintstone #interface #properties #fracturetoughness #acoustics #study #testing #acousticmeasurements #elasticwaves #velocity #losses #prediction #strain #rockmechanics #geophysics #ISRM #KIC #Qfactor #monitoring #strength #failure #cement #science #technology #RSFgrant #nondestructivetesting #resonancemethod #mining #engineeringsolutions
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π Hidden Layers in Permafrost: New Study Decodes GPR Interpretation Challenges
Ground-penetrating radar (GPR) is indispensable for subsurface exploration, but interpreting data in complex multilayered permafrost remains problematic. A new study offers a solution to accurately determine rock properties in permafrost environments.
π₯ Key Findings:
1. Layered Media Model
A mathematical model describes EM wave behavior through alternating frozen/thawed layers, focusing on hyperbolic signatures in radargrams β critical for data interpretation.
Important limitation:
βοΈ The model excludes EM wave dispersion/absorption effects.
2. Measurement "Deception"
A mere 0.5 m thawed layer (within a 4.5 m rock mass) can reduce apparent wave velocity by ~10%, while remaining undetected in standard analysis.
3. Digital Validation:
Simulations in gprMax and GeoScan32 confirmed model accuracy with <0.5% error.
π Applications:
βοΈ improved ground stability assessment for construction;
βοΈ detection of hazardous thawed layers;
βοΈ enhanced automated GPR data processing.
βοΈ Technical Specs:
βοΈ Ricker pulses at 400 MHz;
βοΈ Up to 9 layers analyzed;
βοΈ Dielectric permittivity: Ξ΅'=4β20.
Original study:
π Sokolov K.Π. Model of time-distance curve of electromagnetic waves diffracted on a local feature in the georadar study of permafrost zone rock layers. Mining Science and Technology (Russia). 2024;9(3):199-205. https://doi.org/10.17073/2500-0632-2023-05-118
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#inEnglish #MST #Geophysics #Cryolithozone #Georadar #Permafrost #SoilScience #EngineeringGeology #GPR #SubsurfaceExploration #GeophysicalMethods #RockProperties #SoilPhysics #Geotechnics #Radargram #HyperbolicModel #ElectromagneticWaves
Ground-penetrating radar (GPR) is indispensable for subsurface exploration, but interpreting data in complex multilayered permafrost remains problematic. A new study offers a solution to accurately determine rock properties in permafrost environments.
π₯ Key Findings:
1. Layered Media Model
A mathematical model describes EM wave behavior through alternating frozen/thawed layers, focusing on hyperbolic signatures in radargrams β critical for data interpretation.
Important limitation:
βοΈ The model excludes EM wave dispersion/absorption effects.
2. Measurement "Deception"
A mere 0.5 m thawed layer (within a 4.5 m rock mass) can reduce apparent wave velocity by ~10%, while remaining undetected in standard analysis.
3. Digital Validation:
Simulations in gprMax and GeoScan32 confirmed model accuracy with <0.5% error.
π Applications:
βοΈ improved ground stability assessment for construction;
βοΈ detection of hazardous thawed layers;
βοΈ enhanced automated GPR data processing.
βοΈ Technical Specs:
βοΈ Ricker pulses at 400 MHz;
βοΈ Up to 9 layers analyzed;
βοΈ Dielectric permittivity: Ξ΅'=4β20.
Original study:
π Sokolov K.Π. Model of time-distance curve of electromagnetic waves diffracted on a local feature in the georadar study of permafrost zone rock layers. Mining Science and Technology (Russia). 2024;9(3):199-205. https://doi.org/10.17073/2500-0632-2023-05-118
π Follow our channel: t.iss.one/MinSciTech
#inEnglish #MST #Geophysics #Cryolithozone #Georadar #Permafrost #SoilScience #EngineeringGeology #GPR #SubsurfaceExploration #GeophysicalMethods #RockProperties #SoilPhysics #Geotechnics #Radargram #HyperbolicModel #ElectromagneticWaves
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