FALLEN SNOW PRESERVING STRUCTURE IN SKIING GROUND

摘要

PROBLEM TO BE SOLVED: To simply and efficiently preserve fallen snow on a snowed skiing ground having a large area.;SOLUTION: Heat insulating material layers 8, 10, 12 each including at least one or two of materials consisting of saw dust, hollow glass beads, shirasu balloons, pearlite, silica powder, glass wool, silica alumina powder, urethane foam resin powder, styrene foam powder, are formed on snow layers 9, 11, to thereby thermally insulate the snow layers 9, 11 with respect to the outside. Thus, specific heat insulating material powder can be easily diffused over a skiing ground having a large area by means of a powder diffuser.;COPYRIGHT: (C)2000,JPO