METHOD FOR FORMATION OF A GAP IN EXPLOSIVE SUBSTANCE OF BOREHOLE CHARGE COLUMN

This invention relates to blast works in mining industry. A method for formation of air gap in explosive substance of the column of borehole charge and at the bottom of the well through filling the volume with foamed granulated polystyrene, this is before loading to the well treated with saturated w...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OLIINYK MARYNA OLEKSANDRIVNA, BRYHINETS YURII VOLODYMYROVYCH
Format:	Patent
Sprache:	eng
Schlagworte:	AMMUNITION BLASTING EARTH DRILLING FIXED CONSTRUCTIONS HEATING LIGHTING MECHANICAL ENGINEERING MINING MINING OR QUARRYING WEAPONS
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Beschreibung
Zusammenfassung:	This invention relates to blast works in mining industry. A method for formation of air gap in explosive substance of the column of borehole charge and at the bottom of the well through filling the volume with foamed granulated polystyrene, this is before loading to the well treated with saturated water vapor. To preserve the volume of the formed air gap in the column of explosive substance of the borehole charge the air gap is formed through expansion of the material of the plugs between the walls of the well in the upper and the lower points.The ends of slats and the plugs rest at the wells of the well and form broken line forming the length of the gap.