VERFAHREN UND VORRICHTUNG ZUM SPRENGEN VON HARTEM MATERIAL, Z.B. GESTEIN

A hard compact material, such as rock, is broken by delivering an explosive into at least one hole which has been pre-drilled in the material to be broken and by forcing a relatively incompressible fluid, such as water, into the hole to impact the explosive to initiate same. Upon detonation of the e...

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Bibliographische Detailangaben
Hauptverfasser:	JOHANNES KARLFORS,LEVI, VOLMAR LAVON,ERIK
Format:	Patent
Sprache:	ger
Schlagworte:	AMMUNITION BLASTING DREDGING EARTH DRILLING FIXED CONSTRUCTIONS FOUNDATIONS GALLERIES HEATING HYDRAULIC ENGINEERING LARGE UNDERGROUND CHAMBERS LIGHTING MECHANICAL ENGINEERING MINING MINING OR QUARRYING SHAFTS SOIL SHIFTING TUNNELS WEAPONS
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Beschreibung
Zusammenfassung:	A hard compact material, such as rock, is broken by delivering an explosive into at least one hole which has been pre-drilled in the material to be broken and by forcing a relatively incompressible fluid, such as water, into the hole to impact the explosive to initiate same. Upon detonation of the explosive the fluid stems the hole thereby delaying leakage of blasting gases out of the hole before the material is broken. Preferably, the explosive and the fluid are launched together into the hole. In this case may the explosive and the fluid be encapsulated in a common cover.