Lake Velenje formed as a result of the underground extraction of lignite in the Velenje coal mine. The article deals with certain special issues that have arisen as part of the process to transform ...the landscape from a riverine to a lake system as a result of mining and energy production. Anomalies in the lake system are explained drawing on research and monitoring of the properties and circulation of the lake water. As it was established on agricultural land, and due to intense pollution in the 1960s and 1970s, the lake initially was considered an environmental disaster; later, extensive environmental rehabilitation initiatives turned it into a recreational area.
Trg Šoštanj v srednjem veku Ravnikar, Tone
Kronika (Ljubljana),
09/2021, Letnik:
69, Številka:
3
Journal Article
Razprava poskuša odgovoriti na vprašanje srednjeveškega časa v zgodovini trga Šoštanj. Analiza objavljenega in neobjavljenega gradiva je pokazala, da je Šoštanj v kratkem obdobju po ustanovitvi v ...drugi četrtini 14. stoletja v dobrih stotih letih doživelhiter vzpon ter postal najpomembnejši urbani kraj v Šaleški dolini inpomembno gospodarsko, upravno in sodno središče.
To je spomin na življenje v mestu Šoštanj, nastalém zaradi úspešne usnjarske industrije, ki ga je povzdignila v prestolnico Šaleške doline. Povojno gospodarstvo je stavilo razvoj na energetsko ...panogo, temelječo na pridobivanju energenta in proizvodnji električne energije. Obe dejavnosti sta usodno vplivali na življenje v mestu ter spremenili njegov položaj v družbi in prostoru. Zapis je zgolj moje spominsko podoživljanje dogajanj v prostoru, v katerem živim vse življenje.
Prispevek na podlagi pregleda okupatorjevega arhivskega gradiva in povojne literature analizira najpomembnejše dogodke, ki so se zgodili v Šoštanju in bližnji okolici (Šaleški dolini) v času druge ...svetovne vojne. Medtem ko je bilpartizanski napad na Šoštanj leta 1941 eden od vrhuncev prvega vojnega leta, so okupatorjevi ukrepi skoraj popolnoma uničili narodnoosvobodilno gibanje v mestu in Šaleški dolini. Kljub občasnimpartizanskim napadom in vdorom v mestoje Šoštanj ostal trdno pod nemškim nadzorom vse do konca vojne, koje v neposredni bližini Šoštanja prišlo do dveh večjih kapitulacij okupatorskih enot. Z zgodovino Šoštanja je neizogibnopovezana tudi usoda družine Woschnagg, lastnice tovarne usnja, ki je med drugo svetovno vojno doživela preganjanje s strani okupatorja in po vojni s strani komunističnega režima.
In the paper are presented the oldest written records on Natural History, and especially the Earth Sciences concerning the alek valley and surroundings, and that are of exceptionalcultural heritage ...value. We translated from archaic German a text by Hacquet from 1784 that discusses the Dobrna hot springs, and supplied it with explanations and comments.Added is the copy of a part of Hacquet’s lithohydrographic map with Šalek valley in its centre, and with our geologic explanations. Among the first geologists(geognosts)who studied the Šalek valley the German Keferstein should be mentioned, also author of the first geologic map of Germany,Studer,thewell-known Swiss geologist and founder of the Swiss Geologic Survey, and Ami Boué, one of founders of the French Geologic Society.The first modern geologic map of most of the alek valley and Dobrna depression was elaborated between 1854 and 1856 by Marko Vincenc Lipold, the first geologist of Slovene origin and for many years the general manager of the Idrija mercury mine. The paper overs also the year 1875 when by drilling through the main lignite seam the rich Velenje coal deposit was recognized. This is considered the starting year of exploitation of the Velenje colliery.
Vhribovju severno od Šoštanja sta naprehodu iz visokega vpozni srednji vek nastala manjša gradova, ki sta s svojima nekdanjima stavbnima zasnovama med grajsko kulturno dediščino v slovenskem prostoru ...zelo posebna. Grad Zamberk je nastal v 13. stoletju, opuščen oziroma uničen pa je bil že pred 16. stoletjem. Talna ploskev nekdanjega grajskega jedra kaže, daje tam stala manjša obodna grajska zasnova z obzidanim dvoriščem in bivalno stavbo ali pa da je območje grajskega jedra v celoti zavzemala večja dvonadstropna bivalna stavba brez obzidanega dvorišča. Pri analiziranju grajskih ostalin je treba upoštevati možnost, da bi nenavadna velika koncentrična obrambna jarka z okopoma utegnila nastati pozneje kot grajsko jedro. Morda sta nastala šele zatem, koje bil grad že razvaljen, in ju je treba povezati s protiosmanskim utrjevanjem koroške deželne meje. Sosednji grad Forhtenek je nastal okoli leta 1300. Bilje eden redkih srednjeveških gradov na sedanjem slovenskem ozemlju, kipoleg glavnega stolpa in obodnega obzidja ni imel še posebne bivalne stavbe - palacija in ki ga pozneje niso širili. V razvalino seje spremenil v 17. stoletju.
The Velenje area (almost 200 km² with over 31,000 inhabitants) is based on the Šalek Valley, which became a leading area of industrialisation and urbanisation after the Second World War, with ...consequent pollution problems. Various industrial plants polluted the river while more serious hazards arose through the coal mine which is a still causing landscape subsidence and the thermal power station in the neighbourhood of Šoštanj which is a major source of sulphur dioxide and nitrogen oxide pollution. In 1987 there was an ecological protest which marked the beginning of a sustainable development strategy for the community. During the past decade programmes have dealt with the degradation of air, soil and water to achieve cleaner air, a transformation in landuse and enhancement the river's formerly weak self-purifying capabilities. This article examines the changes in the valley since the attention of the authorities was drawn to the deterioration of living conditions. Despite the pressures of transition which have seen unemployment rising to over ten percent, significant environmental improvements have been made and the area stands as a model for the rest of the country.
In underground coal mining engineering, one of the most important tasks is to monitor, predict and manage the surface subsidence due to underground coal excavation. The impact of underground mining ...excavation reflects as subsidence of the overlying strata and the formation of surface depressions soon after excavation. The surface subsidence is one of many natural processes that exhibit a progression from small beginnings that accelerate and approach a climax over time. When detailed data is lacking, a logistic function is often used. In this paper, the analysis of the surface subsidence above underground mining sites in the Velenje Coal Mine by using a modified sigmoid function (surrogate of logistic function), with the common “S” shape, is introduced. Furthermore, the time estimation of the next and the final epoch measurement is considered.
The complex geochemical interactions in the groundwater of the industrial area of Šalek Valley (Slovenia) between natural and anthropogenic fluids were studied by means of major (Ca, Mg, Na, K, HCO₃ ...⁻, Cl⁻ and SO₄ ²⁻) and trace elements' (As , Cd, Cu, Pb, Zn, Hg, Se and V) abundances, geochemical classification and statistical analysis of data. Cation abundances indicate mixing between a dolomitic end-member and an evaporitic or geothermal end-member. Anion abundances indicate mixing between bicarbonate waters and either sulphate-enriched waters (suggesting hydrothermalism) or chlorine-rich waters. Principal component analysis (PCA) allowed the extraction of seven factors, which describe, respectively: water-rock interaction mainly on dolomitic rocks; redox conditions of water; Cd-Zn enrichment in chlorine-rich waters (probably from industrial wastes); hydrothermal conditions in waters close to major faults; Pb and Cu pollution; V and K enrichments, indicating their common organic source; the role of partial pressure of CO₂ dissolved in water, which is highest in three wells with bubbling gases. Average underground discharge rates of solutes from the Valley range between 0.09 t/a (V) and 1.8 x 104 t/a (HCO₃ ⁻) and indicate how natural fluids can significantly contribute to the levels of elements in the environment, in addition to the amount of elements released by human activities.
Keith (1996) used the term "hot spots" for areas where wildlife is the most threatened by toxic substances. These include areas near industrial and electricity generating centres. Koroska, an ...industrial area in the northern part of Slovenia with a centuries-old tradition of mining and manufacturing of lead and zinc, represents an extreme example of a "hot spot" environment. In the year 1997 ERICo Velenje started a research project entitled The accumulation of heavy metals in tissues of wildlife - with emphasis on roe deer - in the polluted areas of Slovenia. The main aim of the study was to monitor levels of heavy metals in game tissues and to make a risk assessment for wildlife as well as for human health. In the present work, a comparison between the Koroska region and two other contaminated areas in Slovenia is made. One of them is the Salek valley where the major Slovene power plant of Sostanj is located, and the second one is Zasavje where again a large power plant as well as a cement factory are operated. Comparison is also made with the Triglav National Park (TNP), which represents the area without any local pollution sources (Figure 1). A comparison with similar research performed in 1986 (Osrajnik 1990) is also made. The lead smelter at Zerjav stopped primary manufacture of lead ore in 1990. It is expected that a reduction in levels of heavy metals would follow in all constituent segments of the environment.
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