| 摘要 |
<p>The pneumatic backfilling system is used in coal or other mining, esp. in conjunction with striding support systems, pneumatic backfilling is provided in comparatively thin seams. A pneumatic backfilling lead (1), advances in a closed line and is equipped with advance discharges (2), hydraulically activatable and mounted in guideways (4). Discharges (2) and lead (1) are located on flat skids (3) guided on the seam floor, while the guideways are able to swivel. The guideways, hinged so as to swivel on the skids on the coal face side, can be adjustable for height via hydraulic cylinders (5) hinged on the skids on the backfilling side. This is economically adaptable to cramped conditions in seams down to 1 m. thick, providing tight and economical packing.</p> |
