| 摘要 |
FIELD: mining, particularly to prevent gas and dust explosion in mine tunnels. ^ SUBSTANCE: device comprises independent vessels with water discharge orifices, which provide water curtain creation and vessel suspension means. Vessel suspension means connect the vessels to mine tunnel support. Water discharge orifices are made in vessel bottoms and are closed with protective strip having free end and connected to the vessels by means of adhesive. Weight is fastened to the free end and is arranged under mine tunnel roof. Weight falls down under the blast wave action and separates the protective strip from vessel bottoms. ^ EFFECT: increased fire safety. ^ 2 dwg |
