MULTISTAGE A METHOD OF BASE ROCK BLASTING

MULTISTAGE A METHOD OF BASE ROCK BLASTING

PURPOSE: A multistage method for blasting base rock is provided to accurately compartmentalize only desired blasting domain and blast the domain by successively blasting a blaster which is contiguous to a second free surface. CONSTITUTION: A multistage method for blasting base rock comprises the fol...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: JO, JONG EUN, KIM, KYUNG SUK, JO, GEUM WON
Format: Patent
Sprache:eng ; kor
Schlagworte:
AMMUNITION
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Beschreibung
Zusammenfassung:PURPOSE: A multistage method for blasting base rock is provided to accurately compartmentalize only desired blasting domain and blast the domain by successively blasting a blaster which is contiguous to a second free surface. CONSTITUTION: A multistage method for blasting base rock comprises the following steps: filling the upper part of an electric detonator with sand and clay after loading the electric detonator(20), in which a gunpowder(6) and an electric wire(21) are connected, to blasters(10)(10a); integrally connecting a plurality of electric wires and a blasting bus; forming a second free surface by blasting the blasters; and blasting only desired blasting domain by successively blasting the blaster while staggering.