Effect of mine waters from coal mines of the Upper Silesian Coal Basin in the content of Ca and Mg in the catchment of the Upper Odra river

2014 ◽  
pp. 141-146
Keyword(s):  
Coal Mines ◽  
Coal Basin ◽  
Mine Waters ◽  
Upper Silesian Coal Basin ◽  
Odra River

scholarly journals MIGRACE RADIONUKLIDU 226Ra V SEDIMENTECH RYCHVALDSKÉ STRUŽKY

2018 ◽  
Vol 25 (1-2) ◽  
Author(s):  
Radek Morcinek ◽  
Josef Zeman
Keyword(s):  
Mine Water ◽  
Treatment Plant ◽  
Geochemical Evolution ◽  
Mining District ◽  
Coal Basin ◽  
Mine Waters ◽  
Upper Silesian Coal Basin ◽  
Substantial Risk ◽  
Mass Activity ◽  
Increased Activity

Large amounts of mining waters are discharged into waterstreams in the region of Ostrava-Karviná Mining District. This paper deals with discharged mine water from the Žofie watershaft , which is located in Petrvald basin in Czech part of Upper Silesian coal basin. Mine water may affect surface watercourses, especially their sediments, which may have increased activity of radium 226Ra. The aim of this work was to evaluate geochemical evolution of the Rychvald creek with regard to the mobility of radium 226Ra and estimate the degree of influence. From the results, it is evident that the mine waters significantly affect the composition of Rychvald creek. Increased equivalent dose was measured only up to the wastewater treatment plant, which probably considerably diluted the water, consequently diminishing migration abilities of radium. From the result of physicochemical parameters it is evident that discharged mine water from the Žofie watershaft affects mainly conductivity, due to high mineralization of discharged mine water. Increased doses of the gamma radiation equivalent, which are related to the increased mass activity of radium 226Ra, were found in the sediment of the first 1 200 m of the Rychvaldské creek. However the determined increased activities of radium 226Ra do not represent neither substantial risk for human health nor important risk for the environment.

scholarly journals Analysis of the similarity of hard coal mines in terms of the number of dangerous incidents caused by the activation of natural hazards

2019 ◽  
Vol 2 (1) ◽  
pp. 91-100
Author(s):  
Magdalena Tutak
Keyword(s):  
Rock Burst ◽  
Natural Hazards ◽  
Coal Dust ◽  
Coal Mines ◽  
Hard Coal ◽  
Dust Explosion ◽  
Coal Basin ◽  
Taxonomic Analysis ◽  
Upper Silesian Coal Basin ◽  
Roof Rocks

Abstract Hard coal mines and mining enterprises involved in hard coal exploitation in the area of the Upper Silesian Coal Basin (Górnośląskie Zagłębie Węglowe) are characterised by the presence of natural hazards typical of this type of exploitation. These hazards include the risks related to methane, coal dust explosion, endogenous fires, as well as rock burst and caving of roof rocks. The article presents the results of a taxonomic analysis aimed at determining the similarity of hard coal mines and mining enterprises in Poland in terms of the dangerous incidents caused by the risks related to methane, coal dust explosion, endogenous fires, as well as rock burst and caving of roof rocks. The analysis was carried out for the 2008-2018 data and encompassed a total of 26 hard coal mines and mining enterprises located in the Upper Silesian Coal Basin. The analysis was performed using the k-means method of non-hierarchical clustering. The main objective of the article was to determine homogenous groups (clusters) of mines exhibiting the greatest similarity in terms of dangerous incidents caused by the activation of natural hazards in the years 2008-2018. These data can be successfully used for the development of preventive measures and risk analyses for these enterprises.

scholarly journals Rockburst of parameters causing mining disasters in Mines of Upper Silesian Coal Basin

2018 ◽  
Vol 36 ◽  
pp. 03005 ◽  
Author(s):  
Renata Patyńska ◽  
Adam Mirek ◽  
Zbigniew Burtan ◽  
Elżbieta Pilecka
Keyword(s):  
Natural Hazards ◽  
Seismic Activity ◽  
Coal Mines ◽  
High Energy ◽  
Coal Basin ◽  
Structural Units ◽  
The Past ◽  
Upper Silesian Coal Basin ◽  
Mining Conditions ◽  
Weak Earthquakes

In the years 2001-2015, 42 rockbursts were recorded in Polish coal mines. For the past 15 years the scale of the phenomena has been similar and ranges from 1 to 5 rockbursts per year. However, the number of recorded high energy seismic tremors of 108 and 109J (E) energy that has occurred in recent years, 2 to 5, is alarming. According to the data, 27 of tremors of E > 108 J energy that occurred between 2001 and 2015 caused 3 rockbursts. Confronting these data with seismic activity from 1989-2000, it should be noted that only 2 events out of 99 rockbursts caused tremors with energies of E>108 J. Against the background of the scale of seismic and rockburst hazards, the geological and mining conditions of the Upper Silesian Coal Basin (USCB) have been analysed, detailing the structural units in which the rockbursts occurred. On this basis, the author characterised factors that impacts on the mining excavations resulting in rockbursts that caused damage on a larger scale. These rockbursts had the characteristics of mining catastrophes and weak earthquakes not recorded in mining statistics of natural hazards of USCB so far.

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