Reduction of hand-arm transmitted vibration on pneumatic jackleg rock drills

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Mots clés : Vibration;Hand-arm vibration syndrome (HAVS);Vibration white finger (VWF)
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Texte
Sommaire: This paper focuses on a number of interesting results to establish the theory and principle of air-deck blasting. It also gives the mechanism of breakage that takes place in air-deck blasting under varying charge load conditions. With these aspects in mind, the mine management can implement this up-coming technology to enhance safety and higher productivity.
Publication: CIM Bulletin
Auteur(s): P. Pal Roy, R.B. Singh
Mots clés: Air-decking, Presplit blasting, VOD (velocity of detonation), Material decking.
Numéro: 1047
Volume: 94
Année: 2001
Texte
Sommaire: To minimize ore dilution induced by blast movement in surface mines, it is necessary to quantify such movement. This will enable more accurate location of the grade boundaries beneath the surface of a blasted rock pile before excavation. A method has been developed and tested to accurately measure the direction and magnitude of subsurface blast movement. This technique uses a cesium vapour gradiometer and a real-time, differentially corrected GPS system to locate pre- and post-blast position...
Publication: CIM Bulletin
Auteur(s): G.W. Harris, P. Mousset-Jones, J. Daemen
Mots clés: Ore dilution, Blast movement, GPS (Global Positioning System), Field magnetics, Vertical gradient.
Numéro: 1047
Volume: 94
Année: 2001
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