PROCESS OF PERFORMANCE OF DRILLING AND BLASTING OPERATIONS IN QUARRIES

PROCESS OF PERFORMANCE OF DRILLING AND BLASTING OPERATIONS IN QUARRIES

FIELD: mining industry. SUBSTANCE: essence of invention lies in loading of drilled holes with low-energy cord that has no radial pulse with blasting used as initiator and usage of high explosive. Before loading into holes cord is connected to high-power intermediate detonator of OAO-850 type and the...

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Hauptverfasser: FEODORITOV M.I, DERZHAVETS A.S, SLAVSKIJ B.V, ERLYKOV V.L, ALEKSANDROV V.A, TOGUNOV M.B, LJAKHOV V.P, MELIK-GAJKAZOV I.V
Format: Patent
Sprache:eng
Schlagworte:
AMMUNITION
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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creator FEODORITOV M.I
DERZHAVETS A.S
SLAVSKIJ B.V
ERLYKOV V.L
ALEKSANDROV V.A
TOGUNOV M.B
LJAKHOV V.P
MELIK-GAJKAZOV I.V
description FIELD: mining industry. SUBSTANCE: essence of invention lies in loading of drilled holes with low-energy cord that has no radial pulse with blasting used as initiator and usage of high explosive. Before loading into holes cord is connected to high-power intermediate detonator of OAO-850 type and then it is lowered into bottom part of hole. Hole is loaded with high explosive having increased time of burning of products of break-down of inhomogeneous mixture ( granulated trinitrotoluene and granulated saltpeter ) which size of inclusions of separate components amounts to 0.03 m and burning time is equal to or more than 10 ms. EFFECT: increased efficiency of wanted action of blast, decreased expenses and prevention of overcomminution of rock mass. 1 cl, 1 dwgi
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subjects AMMUNITION
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
title PROCESS OF PERFORMANCE OF DRILLING AND BLASTING OPERATIONS IN QUARRIES
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