The scope of the study is the description of coking properties (Roga Index RI, Swelling Index SI, contraction a, and dilatation b) changing with depth in Zofiówka monocline deposit. The results were derived from an area which is of crucial importance to the Polish coking coal resources base, characterised by considerable variability of coal quality and coal rank. About 2,7 thousand samples of coking properties were considered for channel samples collected at the seams of currently operating coal mines. The objective of the research was to designate possible trends in the changes of the coking parameters of coal in deeper, so far unexcavated seams and the forecasts of these parameters. The mean values of coking parameters change with the dep...
Mining the lower seams in a sequence of shallow, closely spaced coal seams causes serious air leakag...
The examined problem is to assess the stress and strain state of the bottom layers in thick regular ...
In most coal basins that are currently being exploited, gas and rock outbursts pose a considerable s...
Zaprezentowano wyniki badań obejmujących wertykalne i lateralne zmiany parametrów jakości węgla na m...
The evaluation of threats connected with the presence of methane in coal seams is based on our knowl...
Zagrożenie wyrzutami metanu i skał w kopalniach górnośląskich wydaje się mieć charakter lokalny, zwi...
The present paper provides the results of measurements that were carried out in drainage holes in co...
This article presents values of porosity and compression strength of hard coals from the area of the...
Przedstawiono dotychczasowy stan rozpoznawania zasobów węgla kamiennego w niektórych złożach Jastrzę...
The paper presents the correlation between the CRI (Coke Reactivity Index), CSR (Coke Strength after...
The quality of coal has been analyzed basing on the data from geological exploration and chemical - ...
Podziemne zgazowane węgla to metoda eksploatacji, która rozwijana jest od 100 lat. Na całym świecie ...
Tyt. z nagłówka.Bibliogr. s. 73-74.The aim of the work was to characterize in coalification paramete...
Seismic and geodetic studies were carried out before, during, and after underground exploitation of ...
The article presents the results of tests of porosity of the Upper-Silesian Coal Basin (USCB) hard c...
Mining the lower seams in a sequence of shallow, closely spaced coal seams causes serious air leakag...
The examined problem is to assess the stress and strain state of the bottom layers in thick regular ...
In most coal basins that are currently being exploited, gas and rock outbursts pose a considerable s...
Zaprezentowano wyniki badań obejmujących wertykalne i lateralne zmiany parametrów jakości węgla na m...
The evaluation of threats connected with the presence of methane in coal seams is based on our knowl...
Zagrożenie wyrzutami metanu i skał w kopalniach górnośląskich wydaje się mieć charakter lokalny, zwi...
The present paper provides the results of measurements that were carried out in drainage holes in co...
This article presents values of porosity and compression strength of hard coals from the area of the...
Przedstawiono dotychczasowy stan rozpoznawania zasobów węgla kamiennego w niektórych złożach Jastrzę...
The paper presents the correlation between the CRI (Coke Reactivity Index), CSR (Coke Strength after...
The quality of coal has been analyzed basing on the data from geological exploration and chemical - ...
Podziemne zgazowane węgla to metoda eksploatacji, która rozwijana jest od 100 lat. Na całym świecie ...
Tyt. z nagłówka.Bibliogr. s. 73-74.The aim of the work was to characterize in coalification paramete...
Seismic and geodetic studies were carried out before, during, and after underground exploitation of ...
The article presents the results of tests of porosity of the Upper-Silesian Coal Basin (USCB) hard c...
Mining the lower seams in a sequence of shallow, closely spaced coal seams causes serious air leakag...
The examined problem is to assess the stress and strain state of the bottom layers in thick regular ...
In most coal basins that are currently being exploited, gas and rock outbursts pose a considerable s...