Item: Gaz-ex avalanche control system
Title: Gaz-ex avalanche control system
Proceedings: Proceedings of the 1992 International Snow Science Workshop, Breckenridge, Colorado, USA
Authors: Jacob Schippers, President. T.A.S., Z.I. Le Bresson, 38660 Le Touvet, France Tel 3376084022 FAX: 3376085666 GAZ-EX Industries, Inc., 12242 Business Park Drive, Suite 32, Truckee, CA. 96161 Tel (916) 587 4666 Fax (916) 587 1773
Abstract: Since 1973, my company has been manufacturing and installing avalanche control equipments. Our 150 CA.T.EX (the "Bomb-Tram") with traditional explosives has been used with good success on three continents. However, to avoid some of the drawbacks associated with more traditional methods (sometimes it was necessary to cut trees or dig trenches in environmentally sensitive areas to install the cable and towers; during snow storms, explosives sometimes hung up on the towers, or ice was formed on the cable, causing derailment ; access to the power station was often dangerous and time consuming), I wanted to develop a system that would allow explosives to be stored all through the winter at the avalanche control device site. Additionally, I wanted a system that would work effectively with remote controls, that could be operated safety and easily accessed from a road or railway, from power stations, from the center of a resort area, etc. I had the idea of using a metal tube with the power generated by ignition at the base of the tube and exploding gas out of the open end. We tested many possibilities on the mountains in the snow. We measured air pressures resulting from the gas explosions (with CEMAGREF assistance) and experimented with many different gases and combinations. A mixture of propane and oxygen finally appeared to be the most efficient.
Keywords: explosives, shock wave, exploding gas
Digital Abstract Not Available