DEVELOPMENT OF MEASURES TO PREVENT IGNITION OF METHANE AND COAL DUST EXCAVATION AND TUNNELING MACHINES

The analysis of the status and research directions prevent ignition of methane and coal dust at operation extraction and tunneling machines. It is revealed that the source of initiation of ignition of the dust-methane-air environment is a high temperature spot frictional contact of the cutter with destructible rock. The explosion safety of work instrument and the minimum the emission of dust in the process of destruction of coal or rock are provided with high-pressure irrigation or hydro-mechanical destruction of rocks by filing jets of water directly into the zone of contact of the tool with destructible array. Designed layouts of hydraulic equipment for mining and tunneling machines for their effective operation in the regime of high-pressure irrigation or hydro-mechanical destruction of coal and rocks.