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Influence Exerted by Construction of Vertical Cylindrical Explosive Charges Increased in Diameter on the Degree of Ore Shattering |
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| Authors: | A. A. Eremenko S. V. Fefelov I. V. Mashukov |
| Affiliation: | (1) Siberian Branch, Russian Academy of Sciences, Institute of Mining, Novosibirsk, Russia;(2) Àbakan Mine, !["ldquo"]("/content/qc9pdaytb54939dm/xlarge8220.gif") Zapsibmetkombinat/!["rdquo"]("/content/qc9pdaytb54939dm/xlarge8221.gif") Joint-Stock Company, Abaza, Khakasia, Russia;(3) The Eastern Scientific-Research Mining Institute, Novokuznetsk, Russia |
| Abstract: | The results are presented for the laboratory and in-situ investigations into influence exerted by construction of the vertical cylindrical explosive charges on the degree of rock-mass shattering. The necessity is shown for creating the ascending workings with a cross-section up to 1m2. For the vertical concentrated charges with inert gaps, the drilling-and-blasting parameters ensuring a decrease in specific consumption of explosive for the secondary shattering are given. |
| Keywords: | deposit rock block explosion charge explosive mining operations |
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