METHOD FOR CONTOUR BLASTING

mining art, in particular, blast methods for mine workings. SUBSTANCE: drilling of mapping blast-holes is accomplished, mapping blast-holes are charged with explosive with placement of indicators in the blast-hole, and the blast-holes are tamped with polyethylene ampoules with a powdered or liquid s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SHAJKIBEKOV SAMAT SOVETBEKOVICH, JUN RUSLAN BORISOVICH, SHCHEPKIN JURIJ PETROVICH, AUEHZOV MUKHAMETZHAN TANATAROVICH, KUTUZOV B.N
Format:	Patent
Sprache:	eng
Schlagworte:	AMMUNITION BLASTING HEATING LIGHTING MECHANICAL ENGINEERING WEAPONS
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Beschreibung
Zusammenfassung:	mining art, in particular, blast methods for mine workings. SUBSTANCE: drilling of mapping blast-holes is accomplished, mapping blast-holes are charged with explosive with placement of indicators in the blast-hole, and the blast-holes are tamped with polyethylene ampoules with a powdered or liquid substance with components absorbing NO,NO2. A charge of ammonium nitrate is used as explosive. Pneumocharging of mapping blast- holes is carried out. EFFECT: enhanced efficiency due to simplified procedure and reduced cost of operations, enhanced safety due to refusal from special constructions or special types of explosive. 2 cl