FIELD: blasting operations for breaking of ice cover. SUBSTANCE: the method consists in placement of at least two charges in the same vertical and their alternate initiation. The charges are preliminarily interconnected with a preset clearance. One of the charges (the thermit one is installed on the ice and remotely initiated, and the other explosive charge is dipped to a preset depth as the ice gets thawed under the thermit charge. After that it is remotely initiated. The charges may be installed by lowering from a helicopter. Initiation of the charges is accomplished by a radio-controlled means. EFFECT: enhanced efficiency of ice breaking. 3 cl, 1 dwg
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Authors
Dates
2002-02-27—Published
1999-12-27—Filed