Abstract
Artificial release of avalanches with explosives for the protection of roads were conducted during the four winters of 1965-1968.
The amount of explosives, distance of detonation centres and time intervals of blasting, designed to produce an adequate release of the snow, structure and moisture of snow and slope inclination.
The explosives were encased in a vinyle chloride pipe in an attempt to produce uniform propagation of the blasting pressure to the surrounding mass of snow and to increase the cracking zone.
It was shown that artificially indused snow avalanches can be produced at will by blasting at intervals of 0.25-0.75 second from the lower side to the upper parts in the detonation area.
Three types of blasting were conducted : total snow removing work, snow roll-in work and cave crushing work. The results were good in all three cases.
