AVALANCHING INITIATION METHOD AND DEVICE Russian patent published in 2006 - IPC E01F7/04 

FIELD: devices affording protection against snowslides, avalanches or falling rocks, namely avalanche preventing structures.

SUBSTANCE: method involves laying perforated hose and electric cable in territory characterized by high avalanche risk on rock surface before snowfall period starting, wherein the hose is adapted to supply explosive gas; leading out hose and electric cable ends into safe zone; supplying gaseous mixture in avalanching territory by pumping thereof under snow blanket from hose through perforated orifices so that gas-saturated zones are created; blasting gaseous mixture with the use of electric cable. Device for above method realization involves flexible hose to be connected to gas source, for instance with gas generator, and provided with perforated orifices punched in hose wall. Device also has electric cable fastened to outer hose surface and comprising electric igniters located in perforated zone of the hose.

EFFECT: increased reliability, safety and efficiency of avalanching initiation, provision of repeated device usage, decreased costs, increased manufacturability and decreased time of works performing.

5 cl, 2 ex, 4 dwg