Gas Monitoring as a Prevention System of Mine Workings in Polish Coal Mines

摘要

Due to the depth of mining in Polish coal mines some co-existing hazards, such asmethane, rock burst or spontaneous fires ones, occur. Systems preventing from naturalhazards must ensure the safety of conducted mining work.This paper presents mining regulations concerning using automatic methanometry, whichmust be observed in Poland. The main principles of building in gas sensors as well as airthermodynamic parameters in mining areas and development headings are presented. Theprinciples are presented on the basis of monitoring examples and controlling methane andfire hazards in driven headings and longwalls ventilated by means of U and Y ventilationsystems. Special emphasis is given to extra prevention measures in roadways and in amethane drainage system, which are not required by regulations, but which are taken inmines. Such prevention systems considerably improve safety in Polish coal mines.