Possibilities of oil shale mining under the Selisoo mire of the Estonia oil shale deposit

Orru, Mall; Väizene, Vivika; Pastarus, Jüri-Rivaldo; Systra, Ylo; Valgma, Ingo

doi:10.1007/s12665-013-2396-x

Cited by 9 publications

(7 citation statements)

References 21 publications

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“…Longwall mining could decrease horizontal losses by 20 to 40%. d) Cutting with shortwall miners One of the main advantages that a shortwall miner could present are the possibility of avoiding weakening pillars in the mine by blasting [20].…”

Section: Resultsmentioning

confidence: 99%

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Technologies for Decreasing Mining Losses

Valgma¹,

Väizene²,

Kolats³

et al. 2013

Scientific Journal of Riga Technical University. Environmental and Climate Technologies

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Section: Resultsmentioning

confidence: 99%

“…Stratified deposits are being developed from lower bedding depth to deeper and more complicated conditions [23]. Continuously the environmental or social restrictions require increasing coefficients that increase mineral losses [20]. This could be limited with the help of technological development [34,13,36].…”

Section: Introductionmentioning

confidence: 99%

Technologies for Decreasing Mining Losses

Valgma¹,

Väizene²,

Kolats³

et al. 2013

Scientific Journal of Riga Technical University. Environmental and Climate Technologies

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“…Further studies are needed to estimate the hydraulic conductivity of peat at different humification levels in order to model potential impact of groundwater lowering on water levels on the bog surface. Two contrasting opinions have been published and further plans for oil shale mining in mire-rich NE Estonia require a clear answer to that question (Marandi et al 2013(Marandi et al , 2014Orru et al 2013).…”

Section: Discussionmentioning

confidence: 99%

“…Two hydrogeological studies have recently considered the impact of the underground mine Estonia on the Selisoo mire and have reached somewhat opposing conclusions. Orru et al (2013) used 1-D calculations to estimate the minimum rainfall that would compensate drainage by the mine.…”

Section: Introductionmentioning

confidence: 99%

Geological settings of the protected Selisoo mire (northeastern Estonia) threatened by oil shale mining

Hiiemaa¹,

Mustasaar²,

Kohv³

et al. 2014

Estonian J. Earth Sci.

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The protected Selisoo mire in northeastern Estonia is located above valuable oil shale resources, partly in the permitted mining area. We describe in detail the geomorphology and geological setting of the mire to understand the natural preconditions for its formation, development and preservation. We used the LiDAR-based digital elevation model for relief analysis, mapped the peat thickness with ground-penetrating radar and described the Quaternary cover through corings. Ridges, oriented perpendicular to the generally southward-sloping terrain, and shallow depressions at the surface of mineral soil have influenced mire formation and its spatio-temporal dynamics. The Quaternary cover under the mire is thin and highly variable. Therefore the mire is hydrogeologically insufficiently isolated from the limestone bedrock that is drained by the nearby oil shale mine and consequently the mining activities approaching the mire may have a negative influence on the wetland and proposed Natura 2000 site. Natura 2000 type wetlands, both protected or currently outside the nature reserves, cover a significant portion of the prospective oil shale mining areas. The distribution and resilience of those sites may significantly influence further utilization of oil shale resources.

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“…It is possible to save up from the transportation of extracted mineral if the primary enrichment is done near the mining face. Introduction of the backfilling technology helps to reduce ground stability issues [12,16,23] and allows us to extract oil shale with smaller loss. It is necessary to proceed with the study in order to find optimal solutions of how and where to use crushing buckets.…”

Section: B Enrichment Unitmentioning

confidence: 99%

Pilot Unit for Mining Waste Reduction Methods

Karu

Rahe

Närep

et al. 2013

"Environmental and Climate Technologies 2013" Conference Proceedings

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-Oil shale mining is a crucially important industry for the Estonian economy. More than 85 percent of electricity in Estonia is produced from oil shale. The oil shale deposit is located in North-East Estonia. The oil shale bed descends three meters per kilometer to the south. The oil shale seam contains interlayered limestone. Some of it is used as low class aggregate rock and the rest is waste rock which is stored in waste rock heaps. Crushing, separating and sampling tests of the waste material are currently being carried out. Initial results show some developments of cutting and crushing possibilities. The aim of this study is to find technological solutions to oil shale waste rock reuse and improve current mining technology.

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Possibilities of oil shale mining under the Selisoo mire of the Estonia oil shale deposit

Cited by 9 publications

References 21 publications

Technologies for Decreasing Mining Losses

Technologies for Decreasing Mining Losses

Geological settings of the protected Selisoo mire (northeastern Estonia) threatened by oil shale mining

Pilot Unit for Mining Waste Reduction Methods

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