Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Ingo Valgma"'
Publikováno v:
Scientific Journal of Riga Technical University. Environmental and Climate Technologies. 11:41-47
In case of stratified deposits like oil shale deposit in Estonia, mining losses depend on mining technologies. Current research focuses on extraction and separation possibilities of mineral resources. Selective mining, selective crushing and separati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05fe6b1a6f0189c458d1ebea5f37f1b6
https://doi.org/10.2478/rtuect-2013-0006
https://doi.org/10.2478/rtuect-2013-0006
Publikováno v:
Environmental Earth Sciences. 70:3311-3321
The paper presents results of the study on oil shale mining (Estonia underground mine) possibilities under the Selisoo mire. The Selisoo area is 2,051 ha in extent, and most of the mire is in natural state. Peat layer consists of thick (4.4–6.5 m)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e1667d9fc765181aeadea3042dc5007
https://doi.org/10.1007/s12665-013-2396-x
https://doi.org/10.1007/s12665-013-2396-x
Publikováno v:
Environmental Earth Sciences. 75
Oil shale mining has impact on the environment. In Estonia, 100 years of oil shale mining history provides sufficient experience and acknowledgement for estimating environmental impact for the future. The mining depth is increasing, and mining activi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b67735561f78f29804f2df71c71a101b
https://doi.org/10.1007/s12665-016-5996-4
https://doi.org/10.1007/s12665-016-5996-4
Autor:
Juri Rivaldo Pastarus, Vivika Väizene, Tiit Rahe, Margit Kolats, Riho Iskül, Ingo Valgma, Veiko Karu
Publikováno v:
Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference; Vol 1 (2013): Environment. Technology. Resources. Proceedings of the 9th International Scientific and Practical Conference. Volume 1; 201-205
Oil shale utilisation losses reach 70% in some cases. These are closely related to legislation, backfilling and waste rock usage. Much smaller sections include production of oil, electricity and chemicals in which most of the research and development
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9273109a8bb8f15b2806f9f107e5435
http://journals.rta.lv/index.php/ETR/article/view/835
http://journals.rta.lv/index.php/ETR/article/view/835
Publikováno v:
Restoration Ecology. 12:200-206
We compared four types of 30-year-old forest stands growing on spoil of opencast oil shale mines in Estonia. The stand types were: (1) natural stands formed by spontaneous succession, and plantations of (2) Pinus sylvestris (Scots pine), (3) Betula p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55e634c36051764b16ea82ec63d789bf
https://doi.org/10.1111/j.1061-2971.2004.00323.x
https://doi.org/10.1111/j.1061-2971.2004.00323.x
Publikováno v:
Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference; Vol 1 (2013): Environment. Technology. Resources. Proceedings of the 9th International Scientific and Practical Conference. Volume 1; 182-185
Oil shale mining and processing industry in Estonia produce a wide assortment of waste could be considered as available fill materials. Waste rock which is not usable in civil engineering and road building may be used for backfilling underground mine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e49cb624d87ea1ae26a54692c70ad640
https://doi.org/10.17770/etr2013vol1.823
https://doi.org/10.17770/etr2013vol1.823
Publikováno v:
Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference; Vol 1 (2013): Environment. Technology. Resources. Proceedings of the 9th International Scientific and Practical Conference. Volume 1; 127-132
Mining waste reduction methods include all mining processes beginning from resource distribution until final products in the plant. For comparing and testing possibilities of mine waste reduction, a cooperation project has been set up aiming to creat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec69b89f52c49904305b554a4d871095
https://doi.org/10.17770/etr2013vol1.811
https://doi.org/10.17770/etr2013vol1.811
Autor:
Ingo Valgma
Publikováno v:
Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference; Vol 1 (1999): Environment. Technology. Resources. Proceedings of the 2nd International Scientific and Practical Conference; 227-232
Northeast part of Estonia has been subject to oil shale mining since 1916. Oil shale as main source for power industry in Estonia is mined in amount of 12 million tonnes per year. The underground production rate is about 6 million tonnes of the miner
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5be0018e837e3f8a8025d52feac336c0
http://journals.ru.lv/index.php/ETR/article/view/1869
http://journals.ru.lv/index.php/ETR/article/view/1869
Autor:
Ingo Valgma, Juri-Rivaldo Pastarus, Ylo J. Systra, Martin Nurme, Ain Anepaio, Ljudmilla Kolotogina, Ants Vannus
Publikováno v:
Oil Shale. 30:326
The 150-300 m thick Ediacaran-Devonian sedimentary cover of Estonia, which contains the commercial oil shale deposit, is divided into blocks by linear fracture and tectonic disturbance zones. Along these zones the bedrock is modified, its composition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6409102ea18ec5656498954f038b7dc0
https://doi.org/10.3176/oil.2013.2s.11
https://doi.org/10.3176/oil.2013.2s.11
Publikováno v:
Oil Shale. 30:305
Several extraction technologies have been used for mining oil shale in Estonia. The quality and properties of the raw material for fuel and oil depend directly on the initial geological properties of the mineral resource. In case of kukersite oil sha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4278e89749b0055eccc5aa45c4b527f9
https://doi.org/10.3176/oil.2013.2s.10
https://doi.org/10.3176/oil.2013.2s.10