Center distance 1.5m, support strength 0.72~0.77MPa; suitable for coal seams with thickness of 1.2~1.6m; adopts equal-height thin coal seam mining technology.
Center distance 1.5m, support strength 0.72~0.77MPa; suitable for coal seams with thickness of 1.2~1.6m; adopts equal-height thin coal seam mining technology.