The Technical Study Of Mining Of Unstable Coal Seam

The raining of unstable coal seam is a thorny thing for miner. From then there aren't any mining methods that can content to various unstable coal seam in the world. According to the characters of the 3# unstable coal seam in Jining No. 2 Colliery, the paper divides this working face into three actual mining sections: comprehensive mining section, transient section and comprehensive and falling coal section. At that time, it makes ascertain the parameter of working face in various section. To analyze and observe in spot the ability of necessary equipments and the supporting ability of hydraulic supports, by the consequences of experiment, we can known that all the equipments can able to satisfy the inquires to various actual mining crafts under mining special coal seam; hydraulic supports are also suited to the movement laws of floors of working face. It made sure working face is going under safety, high production and efficient.