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Загальна кількість знайдених документів : 8
Представлено документи з 1 до 8
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Snihur V. Tendencies of coal industry development in Ukraine [Електронний ресурс] / V. Snihur, D. Malashkevych, T. Vvedenska // Mining of mineral deposits. - 2016. - Vol. 10, Iss. 2. - С. 1-8. - Режим доступу: http://nbuv.gov.ua/UJRN/rr_2016_10_2_3
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Bondarenko V. Numerical methods of geomechanics tasks solution during coal deposits' development [Електронний ресурс] / V. Bondarenko, M. Hardygora, H. Symanovych, V. Sotskov, V. Snihur // Mining of mineral deposits. - 2016. - Vol. 10, Iss. 3. - С. 1-12. - Режим доступу: http://nbuv.gov.ua/UJRN/rr_2016_10_3_3
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Kovalevska I. Research into rock pressure manifestations in interstratal rocks during descending and simultaneous mining of C9 and C10Top coal seams [Електронний ресурс] / I. Kovalevska, H. Symanovych, M. Barabash, V. Snihur // Mining of mineral deposits. - 2017. - Vol. 11, Iss. 1. - С. 50-56. - Режим доступу: http://nbuv.gov.ua/UJRN/rr_2017_11_1_8
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Kovalevska I. Development of a research methodology and analysis of the stress state of a parting under the joint and downward mining of coal seams [Електронний ресурс] / I. Kovalevska, M. Barabash, V. Snihur // Mining of mineral deposits. - 2018. - Vol. 12, Iss. 1. - С. 76-84. - Режим доступу: http://nbuv.gov.ua/UJRN/rr_2018_12_1_11
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Bondarenko V. I. Peculiarities of mining the protecting pillar in the laminal massif of soft rocks [Електронний ресурс] / V. I. Bondarenko, I. A. Kovalevska, H. A. Symanovych, M. V. Barabash, V. H. Snihur // Науковий вісник Національного гірничого університету. - 2020. - № 5. - С. 17-25. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2020_5_5 Purpose. Increasing the completeness of mining coal reserves from protecting pillars located in a laminal massif of soft rocks in the roof and bottom in order to reduce the coal losses in mines and horizons in case when mining operations are at the stage of completion. Methodology. A geomechanical model is developed for research into mining of protecting pillars influenced by stope works, taking into account the laminal massif and rheological processes of creep deformations and stress relaxation of the rock massif. Numerical modelling and analysis of the stress-strain state of the massif are conducted. Conclusions are drawn in terms of substantiation of the technical solutions for mining the protecting pillars. Findings. New patterns have been determined of the stress-strain state of a laminal rock massif in the zone influenced by stope works. A geomechanical model has been developed for mining the protecting pillars with account of rheological processes in the rocks, and the technological parameters of mining the coal from longwall faces have been substantiated. A possibility is provided for repeated use of mine workings by introducing a resource-saving fastening system. Originality. The patterns have been determined of the frontal bearing pressure zone displacement ahead of the longwall face during mining the protecting pillars, as well as the concentration factor Ky = 1,1 - 1,3 at a height from the c6 coal seam up to 18 - 20 m, when contacting the thick siltstone. It was found that the calculated compressive resistance is by 4,2 times higher than the value of acting <$E sigma sub y> and, according to this factor, siltstone maintains continuity through all its thickness. When approaching the <$E c sub 6 sup 1> seam, vertical stress concentration increases and is already Ky = 1,9 - 2,7. Based on the account and analysis of these factors, one can assert that the roof of the seam and the seam itself are not destroyed. Practical value. Technological solutions have been developed for mining the protecting pillars to increase the completeness of coal reserves extraction while reducing its production costs and increasing the safety of stope operations by means of decreasing the rock pressure onto powered support.
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Kovalevska I. Stability of the overworked slightly metamorphosed massif around mine working [Електронний ресурс] / I. Kovalevska, V. Samusia, D. Kolosov, V. Snihur, T. Pysmenkova // Mining of mineral deposits. - 2020. - Vol. 14, Iss. 2. - С. 43-52. - Режим доступу: http://nbuv.gov.ua/UJRN/rr_2020_14_2_7
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Snihur V. Optimization solution substantiation for resource-saving maintenance of workings [Електронний ресурс] / V. Snihur, V. Bondarenko, I. Kovalevska, O. Husiev, I. Shaikhlislamova // Mining of mineral deposits. - 2022. - Vol. 16, Iss. 1. - С. 9-18. - Режим доступу: http://nbuv.gov.ua/UJRN/rr_2022_16_1_4
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Snihur V. I. Authorship of ai-generated works in artistic domain [Електронний ресурс] / V. I. Snihur // Grail of Science. - 2023. - № 33. - С. 426-432. - Режим доступу: http://nbuv.gov.ua/UJRN/grsc_2023_33_71
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