| 摘要 |
<p>A method of forming an artificial snow layer (3) is disclosed. Water content is added to to atmosphere (7) above a floor by a humidifying device (13), or water mist is added to the atmosphere (7) by a water-mist supplying device. The water content or the water mist is frost-frozen by a refrigerating device (6) incorporated at the floor, thus forming on the floor an accumulated frost layer as an artificial snow layer (3). A method of maintaining the formed artificial snow layer (3) is also disclosed. After the formation of the artificial snow layer (3), an atmosphere refrigerating device (12) is stopped or reduced in its operation so as to release the maintenance of the atmosphere below the freezing point. Then, the refrigerating device of the floor (6) is operated to prevent melting of the formed artificial snow layer (3) so as to prevent coagulation of water content in said atmosphere (7) on a surface of the artificial snow layer (3) through humidity adjustment of the atmosphere by a humidity adjusting device.</p> |
