Determination of the Conditions of an Effective Functioning of Elongated Cumulative Charges in Processing the Marble Stone

Abstract:

The study of the effect of Elongated Cumulative Charges (ECC) on rock formations has an important scientific and practical significance for solving a number of process problems in mining practice. The use of charges with a longitudinal concavity for a directional destruction (presplit blasting, “smoothwall” chipping) involves reducing the explosives consumption, preserving the aquifer rock mass from additional explosion-caused cracks, obtaining a smooth contour and reducing the volume of drilling works. It is noted that one of the options that provides the explosion energy redistribution in a destructible medium is the use of elongated cumulative charges with a damping core. Experimental evidences on the dynamic loading of model blocks by an explosion of an elongated cumulative charge with an inert pad of various acoustic stiffness are reported.

• Periodical: Key Engineering Materials (Volume 836)
• Pages: 19-24
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.836.19
• Online since: March 2020
• Authors: Gennady P. Paramonov, Vladimir N. Kovalevskyi, A.V. Mysin*
• Keywords: “Smoothwall” Chipping, Charge Design, Elongated Cumulative Charges, Explosive Loading, Presplit Blasting, Shock Wave

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