Verbesserung der Explosionschutzmassnahmen im Streb und Streb/Streckenuebergang durch Weiterentwicklung manueller Loeschtechniken und der automatisch ausloesenden Wassertrogsperre sowie Konzeption und Erprobung eines aktiven Explosionsschutzes mit Hilfe der Wassernebeltechnik

The explosion protection and fire extinction investigations comprised three sections: 1. Manual extinction techniques. Different types and arrangements of nozzles were investigated for their efficiency in gas fire extinction at different air flow rates. Although all systems were tested satisfactorily, high-pressure systems are recommended as they have a longer range. 2. Explosion protection in the T-junction area with the aid of water trough extinction systems were investigated. A system of this type is described, and background information and the general principle are presented. 3. Methane ignition is a hazard that can not be prevented, but most ignitions in the past were local, so that manual extinction by the mining staff can be recommended. A training programme was developed on the basis of the available long-year experience.SIGLEAvailable from TIB Hannover: RR 1344(138) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekLand Nordrhein-Westfalen, Duesseldorf (Germany)DEGerman