Apparatus for making bore holes in coal

摘要

The invention relates to an apparatus for making bore holes (48) in coal, for instance for coal-face impregnation or the like, with a boring head (46) which has several nozzles (11) which are connected to a high-pressure water unit (40). So that bore holes (48) of appropriately small diameter can be made in a simple manner and without requiring a lot of equipment, the boring head (46) has a water motor (10) which can be operated by the high-pressure water and the rotating part (18) of which is connected to a head (12) carrying the nozzles (11). The water motor (10) has discharge channels (29) for high-pressure water in such a way that the high-pressure water exerts a torque on the rotating part (18). Furthermore, the boring head (46) has a device for guidance in the bore hole (48) as well as reaction nozzles for maintaining the correct setting of the boring head (46) for boring and is attached to a high-pressure hose (45). <IMAGE>