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🔥 We present one of the articles from the new issue of the journal "Mining Science and Technology" (No. 1, 2026)! In coal mines of the Karaganda basin, the roof, ribs, and floor rocks have low strength (20–37 MPa) and are prone to slaking and floor heave. Ensuring excavation stability under such conditions is a critical challenge. The authors performed numerical modeling using the RS2 software package for a roadway driven at a depth of 600 m. A zonal pattern of rock mass deformation was established: developed inelastic deformation zone – 0–0.7 m from the excavation boundary; elastoplastic behavior zone with active fracturing – 0.7–1.9 m; elastic behavior zone – beyond 1.9 m. The findings showed that in the abutment pressure zone ahead of the face, stresses reach 20.48 MPa, which is 25% higher than the in-situ stress level at this depth (16.4 MPa). Using the Factor of Safety (FoS), local zones with FoS < 1 were identified at the roadway junction, quantitatively confirming the need for support reinforcement. The proposed approach to analyzing the stress-strain state and selecting support parameters improves excavation stability and generates economic benefits by reducing repair volumes, minimizing equipment downtime, and optimizing support material consumption. 📖 Read more: Demin V.F., Valiev N.G., Akhmatnurov D.R., Mussin R.A., Zamaliyev N.M. Formation of inelastic deformation zones based on numerical modeling. Mining Science and Technology (Russia). 2026;11(1):90–102. https://doi.org/10.17073/2500-0632-2025-07-1104 🔔 Subscribe to our Telegram channel: t.me/MinSciTech #inEnglish #MST #MiningScience #Geomechanics #CoalMining #RockSupport #NumericalModeling #RS2 #StressStrainState #FactorOfSafety #Karaganda #ExcavationStability #RockPressure

🇷🇺 Mining Science and Technology (Russia) 🇷🇺 ISSN: 2500-0632 (online) Founder: University of Science and Technology MISIS (Moscow) 2025 Journal Impact Metrics (2026 Update) 🔥 CiteScore 2025: 4.4 🔥 SJR 2025: 0.782 🔥 SNIP 2025: 1.033 Quartiles: 📌 Scopus: Q2 📌 Scimago: Q1 📌 SNIP: Q2 Indexation: ✔️ Scopus ✔️ Engineering Village ✔️ Scimago Journal & Country Rank (SJR) ✔️Chemical Abstracts Service (CAS) ✔️GeoRef ✔️etc. About the journal: Mining Science and Technology (Russia) is a peer-reviewed open-access scientific journal. The journal is aimed at specialists in the fields of mining, geology, geotechnology, and related areas. Publication of research articles in the journal is free, except for cases when the article is prepared within the framework of research that was financially supported by Russian or foreign organizations. In such cases, appropriate indication of the funding source must be made in the article. Reviewing: double blind. We are on the Internet: web-site: https://mst.misis.ru/jour Telegram channel: t.me/MinSciTech VK community: https://vk.com/mst.misis #inenglish #MST #information #mineral_resources #geology #mineral #deposits #mining_rock #rock_mechanics #rock_geophysics #beneficiation #surveying #safety #environmental_protection #construction #underground_space #power_engineering #automation #open_pit #blasting #drilling #underground #ore #сoal #oil #gas #mining_machinery #exploration #mining_projects #mining_education

ANÁLISIS TÉCNICO: DOBLETE SÍSMICO EN VENEZUELA (24 JUNIO) ​Les comparto este mapa que detalla geológicamente la magnitud de lo ocurrido hoy en el centro-occidente del país. ​Puntos clave del análisis: ​🗺️ Interacción de dos fallas: La ruptura inicial (M_w\ 7.2) ocurrió en la Falla de Boconó (cerca de San Felipe). Esto provocó una transferencia instantánea de esfuerzos que, solo 39 segundos después, activó de forma violenta el tronco principal de la Falla de Morón en la costa (M_w\ 7.5). ​📏 Cercanía extrema: Ambos epicentros estuvieron separados por una distancia lineal menor a 30 kilómetros, lo que explica la intensidad y la continuidad destructiva del sacudón. ​💥 Mecanismo: El desplazamiento fue de tipo transcurrente horizontal (desgarre dextral). Las réplicas moderadas continuarán mientras el sistema de fallas se reajusta. ​Mantengan la calma, permanezcamos en áreas abiertas si hay daños estructurales y evitemos difundir rumores. 🙏

🔥 We present one of the articles from the new issue of the journal "Mining Science and Technology" (No. 1, 2026)! The rock cutting process is cyclic: rock is separated from the mass in discrete portions (chips), and the cutting force during a single chip formation varies linearly. The authors developed a stochastic mathematical model for cutting force generation, representing the process as a flow of random events – elementary loading and fracture events of a certain rock mass volume. The interval between events is treated as a random variable. The model requires only 2–3 parameters for identification (compared to 10–20 needed for finite element methods), does not rely on expensive commercial software, and can be easily integrated into the digital twin of a mining shearer. The findings showed that the closest agreement with experimental data (error for expected value and standard deviation not exceeding 7%, for maximum value – 15%) was achieved with a model using a truncated exponential distribution of intervals between successive fracture events. Good agreement was also confirmed between the force distribution histograms and spectral density plots obtained from full-scale and computational experiments. The proposed approach is also applicable to mathematical modeling of hard soil cutting and to modeling the operating processes of crushing machines. 📖 Read more: Kondrakhin V.P., Gutarevich V.O. Stochastic mathematical model for rock cutting force generation. Mining Science and Technology (Russia). 2026;11(1):80–89. https://doi.org/10.17073/2500-0632-2024-12-873 🔔 Subscribe to our Telegram channel: t.me/MinSciTech #inEnglish #MST #MiningScience #MiningMachinery #RockCutting #MathematicalModeling #StochasticModel #DigitalTwin #CuttingForce #ChipFormation #MiningShearer #EarthmovingMachines #CrushingMachines

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