| 摘要 |
A device for reducing dust in workings such as underground workings which are supported by shields comprises a plurality of shields each having a top and a side wall on at least one side disposed alongside and spaced from the next adjacent shield side wall. A liquid conduit is carried by the sheild adjacent the top of its side wall and it is provided with a plurality of openings or discharge nozzles along its length in order to direct a dust settling liquid or spray downwardly adjacent the side wall. An elastic seal extends outwardly from the bottom of the side wall and applies against a similar seal of the next adjacent shield. The two shields together define a runoff gutter for the liquid employed to settle the dust. |
