Slideboard device for underground mine face ventilation

摘要

A slideboard for underground mine face ventilation which acts as an extension of a line brattice. When used, the slideboard is advanced towards the working face of the mine to provide an inlet for clean air and an outlet for exhausting gases laden with dust particles. The slideboard has a frame supported on and slideable with respect to the ground as it is advanced along with a continuous mining machine. At the upper portion of the slideboard frame are a series of halflooped hoses which provide a flexible seal with the roof. The main supporting frame is rigid and is formed by a series of vertical and horizontal members whose narrower edges face into the air stream to reduce air friction and increase rigidity. Near the center of the slideboard a rib strut and outrigger provide lateral support and a sliding surface and pivot point. The base of the slideboard is trapezoidal for structural reinforcement; and a plywood gusset in the panel place provides additional reinforcement. The outby end panel of the slideboard is hinged to seat lightly against the line brattice to form an air seal therewith. The entire frame, including the outby end panel, and the upper half-loop hoses are covered with an air impervious layer of brattice cloth material.