| 摘要 |
A mine brattice includes an executive device made of elastic air impermeable sheet as a side surface of a cylinder, this is lined with elements for its fixation at perimeter of the mine working and with straps. Each strap is connected to the free edge of the sheet with its middle, the free ends of the straps go inside the sheet to the side opposite with respect to the main edge, and are gathered to a knot. The straps are connected to the main and reversing rope and elastic cables. The main rope is connected to the ends of the straps at the side of the main edge of the sheet, the free end of the additional elastic cable is intended for fixation in the working with previous tension. The main and the reversing ropes are arranged with possibility of change and fixation of the lengths of those and fixation of the free ends in the working. Given air flow rate in the working at normal and reversing ventilation modes is provided. |
