New PDF release: Technical, Technological and Economical Aspects of

By Jerzy Kicki, Eugeniusz Sobczyk

ISBN-10: 0415436702

ISBN-13: 9780415436700

ISBN-10: 0415889529

ISBN-13: 9780415889520

The foreign Mining discussion board is a habitual occasion, hosted through the college of technology and expertise in Cracow, Poland, bringing jointly a global workforce of scientists, together with these operating in rock mechanics and computing device engineering in addition to mining engineers. the subjects are wide-ranging, together with papers on distant sensing to evaluate fundamental impression; remedy of sealed-off coal mine fires; sustainable improvement in mine closure; and tracking of traditional risks and questions of safety.

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Additional resources for Technical, Technological and Economical Aspects of Thin-Seams Coal Mining, International Mining Forum, 2007: Proceedings of the Eighth International Mining Forum 2007 Cracow - Szczyrk - Wieliczka, Poland, February 2007

Sample text

Maximize productivity using highly productive mechanized mining equipment. Different methods used for mining narrow veins in Quebec and Ontario, together with their advantages and drawbacks will be presented in the sections that follow. 1. Selective mining of vertical and sub-vertical narrow veins With regard to physical dimensions, orientation and continuity of veins, dilution is one of key concerns for mine operators. Selective mining methods such as shrinkage or cut-and-fill are used to extract ore with a minimum amount dilution by waste rock.

A. Balkema, London, pp. 1119 (in English). : Science Doctrine of “Mine of 21st Century”. Scientific Works of DonGTU: Historical and Futurological Aspects of Mining, Alchevsk 2005, pp. 190231 (in Russian). G. Reality and Future of Preparatory Technique. Proceedings of the School of Underground Mining 2003, International Mining Forum 2003, Polish Academy of Science, Kraków, Nauka-Technika, 2003, pp. 234243 (in English). : Frontal Shearer KPF “MIR”. Ukrainian Coal, 2005, ʋ 7, pp. 1619 (in Russian).

The maximal load measured in dynamometers near the heading floor was also lower than the computed values by approximately 50%. The above differences result from the fact that friction in strata contact points was not taken under consideration in the analytical studies, but roughness of fracture surface tends to minimise shear stress considerably. Therefore, it may be concluded that the application of the àP-9/V29 arching was a reasonable choice despite considerably unfavourable mining and geological conditions.

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Technical, Technological and Economical Aspects of Thin-Seams Coal Mining, International Mining Forum, 2007: Proceedings of the Eighth International Mining Forum 2007 Cracow - Szczyrk - Wieliczka, Poland, February 2007 by Jerzy Kicki, Eugeniusz Sobczyk


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