| 摘要 |
Device for removing alluvial deposits (24) from the bed (29) of a body of water, whereby the device (1) consists of a bell (2) with an open bottom (3), whereby this device (2) is provided with means to control the water level (30) in the bell (2) and with suction means to suck up alluvial deposits (24), whereby a section of the sidewall (8) of the bell (2) is open at the bottom, whereby the opening (10) can be closed by a partition (12) that can be moved between a raised and a lowered position, and that the device (1) is provided with a drive (13) that is operated from a hydraulic crane (5), affixed to a floating structure, with an articulated arm (6) at the end of which the bell (2) is fastened and which is able to drive the partition (12) into the alluvial deposits (24) and to move the bell (2) in a horizontal direction by means of a computer-controlled controller without thereby raising the bell (2). |
