scholarly journals Geotouristic attractions of the Ostrava part of the Upper Silesian Basin: geological and environmental sites

2017 ◽  
Vol 8 (2) ◽  
pp. 50-57
Author(s):  
Jakub Jirásek ◽  
Lenka Petrušková ◽  
Martin Sivek
Keyword(s):  
Coal Mining ◽  
Mine Water ◽  
Bituminous Coal ◽  
Underground Mining ◽  
Drainage System ◽  
Environmental Issues ◽  
Water Drainage ◽  
Geological Features ◽  
Burning Coal ◽  
Environmental Burdens

Abstract In the Ostrava part of the Upper Silesian Basin there are many geotouristic sites connected with the underground mining of Carboniferous bituminous coal. Text is focused on those related to the geology of the Basin and environmental issues connected to coal mining. Of great intrest are outcrops of Mississippian sediments of the paralic Ostrava Formation, as well as two most important museums with permanent geological exhibitions. Some interesting geological features conncted to younger periods of Quarternary glaciation are also mentioned. Two types of publicly accessible sites related to the environmental burdens (burning coal heaps, saline mine water drainage system) are also described.

Water Probe in Coal Mine Working Face

2013 ◽  
Vol 734-737 ◽  
pp. 888-891
Author(s):  
Chen Shi
Keyword(s):  
Hydraulic Conductivity ◽  
Coal Mining ◽  
Coal Mine ◽  
Mine Working ◽  
Mine Water ◽  
Theoretical Calculations ◽  
Drainage System ◽  
Water Inflow ◽  
Interference Method ◽  
Working Face

Water probe in coal mine working face is an important part of the work of Mine Water. When the mine working face close to the aquifer hydraulic conductivity faults, underground rivers, caves and hydraulic conductivity collapse columns; extractive damaging effects, water probe should be done. However, the calculation of water inflow face probe has no feasible way. This paper discussed the theoretical calculations to explore water drilling inflow well group interference method and provides the basis for provision of drainage system for the coal mining enterprises.

scholarly journals High Specific Activity of Radium Isotopes in Baryte from the Czech Part of the Upper Silesian Basin—An Example of Spontaneous Mine Water Treatment

Minerals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 103
Author(s):  
Jakub Jirásek ◽  
Dalibor Matýsek ◽  
Petr Alexa ◽  
Michal Osovský ◽  
Radim Uhlář ◽  
...  
Keyword(s):  
Bituminous Coal ◽  
Specific Activity ◽  
Drainage System ◽  
High Specific Activity ◽  
Water Drainage ◽  
Mine Waters ◽  
Radium Isotopes ◽  
Mill Tailings ◽  
The Mean ◽  
Sample Method

Radium-bearing barytes (radiobarytes) have been known since the beginning of the 20th century. They are mainly found as precipitates of low-temperature hydrothermal solutions. In anthropogenic environments, they frequently occur as crusts on oil industry equipment used for borehole extraction, in leachates from uranium mill tailings, and as a by-product of phosphoric acid manufacturing. Recently, we recognized Ra-rich baryte as a precipitate in the water drainage system of a bituminous coal mine in the Czech part of the Upper Silesian Basin. The precipitate is a relatively pure baryte, with the empirical formula (Ba0.934Sr0.058Ca0.051Mg0.003)Σ1.046S0.985O4.000. The mean specific activity of 226Ra was investigated by the two-sample method and it equals 39.62(22) Bq/g, a level that exceeds known natural occurrences. The values for 228Ra and 224Ra are 23.39(26) Bq/g and 11.03(25) Bq/g. The radium content in the baryte is 1.071 ng/g. It is clear that the Ra-rich baryte results from the mixing of two different mine waters—brines rich in Ba, Sr, and isotopes 226Ra and 228Ra and waters that are affected by sulfide weathering in mine works. When this mixing occurs in surface watercourses, it could present a serious problem due to the half-life of 226Ra, which is 1600 years. If such mixing spontaneously happens in a mine, then the environmental risks will be much lower and will be, to a great, extent eliminated after the closure of the mine.

Radiological evaluation of mine water discharges from hard coal mining in the Fossa Eugeniana Area, Germany

Kerntechnik ◽  
2008 ◽  
Vol 73 (3) ◽  
pp. 101-107
Author(s):  
C. Wanke ◽  
S. Ritzel ◽  
R. Sachse ◽  
R. Michel
Keyword(s):  
Coal Mining ◽  
Mine Water ◽  
Hard Coal ◽  
Radiological Evaluation ◽  
Hard Coal Mining

Wildcat Strikes in Bituminous Coal Mining

ILR Review ◽  
1979 ◽  
Vol 32 (4) ◽  
pp. 465-483 ◽  
Author(s):  
Jeanne M. Brett ◽  
Stephen B. Goldberg
Keyword(s):  
Coal Mining ◽  
Bituminous Coal

scholarly journals On the Geology of the Beaufort and Ebbw Vale District of the South Wales Coal-Field

The Geologist ◽  
1858 ◽  
Vol 1 (4) ◽  
pp. 124-129
Author(s):  
George Phillips Bevan
Keyword(s):  
Bituminous Coal ◽  
Health It ◽  
Coal Field ◽  
The South ◽  
Great Demand ◽  
South Wales ◽  
Burning Coal ◽  
Coal Measures ◽  
Different Parts ◽  
General Appearance

In my former paper I endeavoured to describe the general appearance and characteristics of the limestone, millstone grit, and Pennant rocks of this coal-field, and shall now proceed to give a brief outline of the coal measures themselves and their fossil contents. As I stated before, the character of the coal is materially different in different parts of the basin; for instance, if a line be drawn from Merthyr to the sea in a south-western direction, it will divide the basin into two unequal portions, the eastern one containing bituminous coal, and the western the anthracite. I do not mean to say that there is an exact line of demarcation between the two kinds of coal, but merely that such a boundary will seem to show pretty well where the two qualities pass into one another. Curiously enough, too, in the western or anthracite portion the seams are anthracitic in the northern bassets, while the southern outcrops of the same veins are bituminous. The anthracite is now in very great demand; but, formerly, people would have nothing to do with it, and there was even a law passed to prevent its being burned in London, on account of its supposed noxious qualities, and the idea that it was detrimental to health. It differs from the bituminous coal principally in containing more carbon, less bituminous matter, and less ashes; and, as a consequence, is a much cleaner-burning coal. We may, however, dismiss the anthracite, as this portion of the field is destitute of it.

Modeling of the stress-state longwall face during coal mining with the technology of roof management complete drop and stowing

2020 ◽  
pp. 99-106
Author(s):  
I. E. Mazina ◽  
A. A. Stel’makhov ◽  
L. F. Mullagalieva
Keyword(s):  
Coal Mining ◽  
Strain State ◽  
Underground Mining ◽  
Negative Impact ◽  
Hydrological Regime ◽  
Coal Bed ◽  
Stress Strain ◽  
Environmental Friendliness ◽  
Modeling And Analysis ◽  
Stress Strain State

Underground mining of coal deposits has a negative impact on all components of the environment. When developing a coal deposit, it is coal mining technology that determines the scale and consequences of the negative impact. Changes in the stress-strain state of the geo-environment can lead to a violation of the hydrological regime, increased gas emission from the host rocks, the initiation of gas-dynamic processes. Choice of roofing management technology - as a geotechnological method of natural and technical system management determines the environmental friendliness of coal mining and creates safety conditions. The article deals with the technology of roofing control during coal production. For this purpose mathematical modeling and analysis of stress-strain state of the bottomhole part of the coal bed for the conditions of S.M. Kirov is performed. As a result of modeling, two technologies of roof control were analyzed - complete caving and stowing. For the worked out clearing leaves filled with either caving rocks or stowing material, there are characteristic unloading zones in the massif to be worked and overworked, as well as pressure reference zones, which fall on the parts of the pillars associated with the lava. It was found out that the application of the stowing technology creates conditions for minimization of gravitational stresses in the geoenvironment, as well as significantly reduces the potential energy of form change.

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