FIELD: blasting operations.
SUBSTANCE: device (2) initiating avalanching, comprising at least one chamber (4) for gas explosive mixture with downward-facing aperture (6) which is provided with gas supply means (15, 16) providing at least partial filling of the volume limited by the chamber (4) with the gas explosive mixture with a density less than the density of air. The device additionally comprises the ignition means (14) of this mixture. The chamber (4) has generally a shape of a bell or a truncated cone with a substantially vertical axis, and the ignition means (14) are arranged at the edge (7) of the chamber (4), opposite the aperture (6).
EFFECT: device is more reliable and is characterized with a significant autonomy.
19 cl, 8 dwg
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