GATE METALLURGICAL ENGG. - 2024

🔥 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

Dear colleagues! We have prepared for you a selection of articles on environmental topics published in the journal Mining Science and Technology (Russia) in 2024–2025. The selection includes works devoted to geo-ecological monitoring, wastewater treatment, geo-ecological assessment of territories, and the development of environmentally safe technologies: 🔹 Titov A.S., Toropov A.S. Geoenvironmetal assessment of different types of cryolithic soils in Western Yakutia under the conditions of diamond-mining operations. Mining Science and Technology (Russia). 2024;9(2):170-182. https://doi.org/10.17073/2500-0632-2023-12-188 🔹 Ivanova L.A., Prosekov A.Yu., Ivanov P.P., Mikhaylova E.S., Timoshchuk I.V., Gorelkina A.K. Assessment of the efficiency of wastewater treatment from coal enterprises for suspended solids using various filtering materials. Mining Science and Technology (Russia). 2024;9(3):263-270. https://doi.org/10.17073/2500-0632-2024-03-227 🔹 Zhukov S.A. Substantiation of environmental safety in metro facility operations considering hydrogeological risks. Mining Science and Technology (Russia). 2024;9(3):283-291. https://doi.org/10.17073/2500-0632-2024-04-259 🔹 Golik V.I., Razorenov Yu.I., Valiev N.G., Gavrina O.A. Environmentally sound geotechnologies for leaching metals from polymetallic ore processing wastes and wastewater. Mining Science and Technology (Russia). 2024;9(3):271-282. https://doi.org/10.17073/2500-0632-2023-11-184 🔹 Rastanina N.K., Golubev D.A., Perfiliev A.V., Rastanin P., Popadyev I.A. Assessment of the elemental status of the young population in Solnechny, Khabarovsk krai, as part of mining environmental monitoring. Mining Science and Technology (Russia). 2025;10(2):161-168. https://doi.org/10.17073/2500-0632-2024-11-338 🔹 Rastanina N.K., Golubev D.A., Kayumov N.A., Rastanin P.L., Popadyev I.A. Impact of tin ore mining on the streamflow of small rivers in mining regions. Mining Science and Technology (Russia). 2025;10(4):369–378. https:

Dear colleagues! 🔥 The new issue of the journal Mining Science and Technology (Russia) is coming soon! 🔥 The upcoming issue features articles on geomechanics, geophysics, mineral deposit development, aeromagnetic surveying, fire diagnostics in coal seams, ore quality management, remining of reserves, and other topical issues of the mining industry. Stay tuned for updates on our website: https://mst.misis.ru/ 🔔 Subscribe to our Telegram channel: t.me/MinSciTech #InEnglish #MST #NewIssue #Mining

🔥 New issue of Mining Science and Technology (Russia) has been published! Issue No. 1 of Mining Science and Technology (Russia) for 2026 is now available! Full table of contents is available at: https://mst.misis.ru/jour/issue/view/48/showToc In this issue: 1️⃣ Orazbekova G.B., Mataibayeva I.E., Zimanovskaya N.A. et al. UAV-based aeromagnetic surveying for exploration targeting at the Kargoba copper-molybdenum occurrence. Mining Science and Technology (Russia). 2026;11(2):107-121. 📖 Full text 2️⃣ Gamayunov S.N., Zhigulskaya A.I., Zyuzin B.F. Design rationale for a milling drum used in layer-by-layer surface milling of peat deposits containing wood inclusions. Mining Science and Technology (Russia). 2026;11(2):122-129. 📖 Full text 3️⃣ Turtygina N.A., Okhrimenko A.V., Glinsky A.V., Ryzhenkov K.A. Mine design and process engineering solutions for copper-nickel ore quality management in underground mining. Mining Science and Technology (Russia). 2026;11(2):130-140. 📖 Full text 4️⃣ Baryakh A.A., Beltyukov N.L., Smirnov E.V., Zdanovich M.Ya. Pilot testing of sylvinite ore reserves re-mining method. Mining Science and Technology (Russia). 2026;11(2):141-150. 📖 Full text 5️⃣ Bosikov I.I., Klyuev R.V., Silaev I.V., Verisokin A.E. Mathematical modeling of the reliability of mine ventilation systems using integro-differential equations with additional invariance. Mining Science and Technology (Russia). 2026;11(2):151-158. 📖 Full text 6️⃣ Borisenko D.I., Kobylkin S.S. Acoustic methods for detecting and locating fire sources in coal seams: classification and future directions. Mining Science and Technology (Russia). 2026;11(2):159-168. 📖 Full text 7️⃣ Shadrin A.V. Measurement of the attenuation coefficient of acoustic signals generated by an operating roadheader in a coal mine. Mining Science and Technology (Russia). 2026;11(2):169-179. 📖 Full text 🔗 All articles are open access! 🔔 Subscribe to the journal's Telegram channel: t.me/MinSciTech #InEnglish #MST #NewIs

🔥 We present one of the articles from the new issue of the journal "Mining Science and Technology" (No. 2, 2026)! At small peat deposits, traditional stump grubbing is economically unjustified. For areas up to 100 hectares, preparatory costs are comparable to the production volume, and without removing wood inclusions, product quality deteriorates. The authors of the article proposed a milling drum design for mining machinery that addresses the problem differently: the equipment simultaneously comminutes the peat mass and processes embedded wood inclusions. Two stages are combined into one. What does this offer for mining practice? Reduced preparatory costs, elimination of bulky equipment, and the ability to bring into production deposits previously considered unprofitable. A dual-motor hydraulic drive automatically engages the second motor when encountering large stumps, improving equipment reliability under variable loads. Wood is comminuted to sizes suitable for separation and subsequent utilisation. This approach enables mining at sites with wood inclusions without prior grubbing, expanding the resource base of small enterprises and improving the efficiency of mining operations. 📖 Read more: Gamayunov S.N., Zhigulskaya A.I., Zyuzin B.F. Design rationale for a milling drum used in layer-by-layer surface milling of peat deposits containing wood inclusions. Mining Science and Technology (Russia). 2026;11(2):122–129. https://doi.org/10.17073/2500-0632-2025-06-994 🔔 Subscribe to our Telegram channel: t.me/MinSciTech #InEnglish #MST #MiningScience #Peat #Milling #PeatMachinery #WoodInclusions #AdaptiveTechnologies #MiningEngineering

❓ How to identify areas suitable for coal seam methane extraction? Methane from coal seams is a promising unconventional energy source. However, unlike conventional gas deposits where gas is trapped in reservoirs, here it is dispersed over vast areas. And not every site is suitable for commercial production. A scoring system is used for assessment, combining 10 key factors: permeability, desorption, methane content, resource density, volatile matter yield, moisture content, and others. Each factor is rated on a scale from –10 to +10 points. Key patterns identified: 🔹 Gas content increases with depth following an S-shaped curve (Langmuir equation). At depths exceeding 600 m, methane content reaches 25–27 m³/t. 🔹 Permeability decreases with depth: at 250–300 m – 10–15 mD, at 600–700 m – hundredths and thousandths of a millidarcy. 🔹 Sorption capacity of coals depends on petrographic composition – correlations with fusinite content and temperature have been established. 🔹 Host rocks also contain methane: in argillites and siltstones with dispersed coal matter – up to 4–5 m³/t of rock. Ranking example (Karaganda basin, total score): 🥇 Sherubainurinsky – 38 🥈 Saransky – 34 🥉 Taldykuduksky – 32 4️⃣ Promyshlenny – 31.9 5️⃣ Tenteksky – 29 The Sherubainurinsky site leads due to high resource density, methane content, and volatile matter yield, but lags behind others in desorption and moisture content. Why this matters: The scoring system allows quantitative comparison of sites and prediction of methane production efficiency at the planning stage. The answer to the question in the title: the higher the total score, the more promising the site. 📖 Read more: Mussin R.A., Nemova N.A., Akhmatnurov D.R., Zamaliyev N.M., Reshetnyakov E.D., Reznik A.V. Justification of the prospects for developing gas-bearing sites in the Karaganda coal basin. Mining Science and Technology (Russia). 2025;10(4):321–337. https://doi.org/10.17073/2500-0632-2025-06-425 🔔 Subscribe to our Telegr

🔥 We present one of the articles from the new issue of the journal "Mining Science and Technology" (No. 2, 2026)! The Norilsk deposits are one of Russia’s largest mineral resource bases. However, high-grade ore reserves are depleting, and over the next 20 years, production volumes will increase by 30%, while ore value will decline by 35%. How can product quality be maintained? The authors of the article proposed an integrated approach: they updated ore quality management methods for underground mining, classifying them into blending and stabilization methods and segregation and separation methods. Production studies confirmed the existence of significant reserves for effective ore flow management. What does this offer for practice? A technological scheme for an underground quality management system has been developed, including an information and control structure with real-time monitoring of metal content at all stages — from the face to the surface. This allows improving the quality of commercial ore and the stability of its mineral composition. 📖 Read more: Turtygina N.A., Okhrimenko A.V., Glinsky A.V., Ryzhenkov K.A. Mine design and process engineering solutions for copper-nickel ore quality management in underground mining. Mining Science and Technology (Russia). 2026;11(2):130–140. https://doi.org/10.17073/2500-0632-2025-07-1003 🔔 Subscribe to our Telegram channel: t.me/MinSciTech #InEnglish #MST #MiningScience #OreQualityManagement #Norilsk #CopperNickelOres #UndergroundMining #Beneficiation #OreFlows #Segregation #QualityStabilization #MiningEngineering

🔥 We present one of the articles from the new issue of the journal "Mining Science and Technology" (No. 2, 2026)! At many mines, substantial mineral reserves remain underground after primary extraction – in pillars, caved zones, or uneconomic areas. Re-mining makes it possible to recover these reserves, but requires confirmation of safety under the conditions of an already formed natural-technogenic rock mass. The authors of the article conducted pilot tests at the BKPRU-2 mine of PJSC Uralkali (Verkhnekamsk deposit). The testwork revealed that caved rocks are prone to inrush, and the strength properties of the layer vary widely: from 0.4–3.8 MPa in caved zones to 16.2–24.0 MPa in pillars. The displacement rates of the working contours in the natural-technogenic layer are 22–28 mm/year, which falls within the standard range. The main conclusion: the re-mining method has confirmed its feasibility and safety. Its implementation will increase the sylvinite ore recovery factor by an average of 16%, extend the service life of operating mines, and bring previously written-off reserves into production – without the need for new mine construction. For the potash industry, this is a strategic reserve comparable to the commissioning of new levels. 📖 Read more: Baryakh A.A., Beltyukov N.L., Smirnov E.V., Zdanovich M.Ya. Pilot testing of sylvinite ore reserves re-mining method. Mining Science and Technology (Russia). 2026;11(2):141–150. https://doi.org/10.17073/2500-0632-2026-02-1095 🔔 Subscribe to our Telegram channel: t.me/MinSciTech #InEnglish #MST #MiningScience #PotashOres #Sylvinite #ReMining #VerkhnekamskDeposit #Geomechanics #MineWorkingsStability #MiningEngineering

🔥 We present one of the articles from the new issue of the journal "Mining Science and Technology" (No. 2, 2026)! Acoustic methods for predicting gasogeodynamic phenomena are used in coal mines. One of the parameters is the acoustic attenuation coefficient in the coal-rock mass. However, its determination under mine conditions is complicated by interference between longitudinal and shear waves and their reflections from the seam boundaries. The author of the article conducted an experiment at a Kuzbass mine, recording the noise spectrum of an operating roadheader at distances from 11 to 67.7 m from the face. It was found that, with the standard approach, the attenuation coefficient does not increase linearly with frequency but exhibits a nonmonotonic behavior, leading to errors in estimating the rock mass stress state. To eliminate this, it was proposed to determine the attenuation coefficient within frequency windows of at least 200 Hz, with time averaging corresponding to the interval between roadheader stoppages for rib support installation. What does this offer for practice? The proposed algorithm makes it possible to obtain a linear dependence of the attenuation coefficient on frequency in the 0–700 Hz range with a coefficient of determination of 0.997, enabling signal attenuation to be taken into account when predicting gasogeodynamic phenomena. 📖 Read more: Shadrin A.V. Measurement of the attenuation coefficient of acoustic signals generated by an operating roadheader in a coal mine. Mining Science and Technology (Russia). 2026;11(2):169–179. https://doi.org/10.17073/2500-0632-2025-11-1058 🔔 Subscribe to our Telegram channel: t.me/MinSciTech #InEnglish #MST #MiningScience #AcousticDiagnostics #GGPPrediction #CoalMines #AttenuationCoefficient #Roadheader #Kuzbass #Safety #Gasogeodynamics