Center distance 1.75m, support strength 1.35~1.37MPa; suitable for coal seams with thickness of 6.6~13.2m; the first successful development of equipment for 50° large dip angle heavy fully mechanized top coal caving working face.
Center distance 1.75m, support strength 1.35~1.37MPa; suitable for coal seams with thickness of 6.6~13.2m; the first successful development of equipment for 50° large dip angle heavy fully mechanized top coal caving working face.