Method for removing alluvial deposits from the bottom of a watery area

摘要

Method for removing alluvial deposits from the bottom of a watery area, whereby the layer of alluvial deposits (6) situated on the bottom (13) is carried to a place of discharge (16), whereby the removal of the alluvial deposits (6) takes place under a diving bell (2) placed on or in the vicinity of the water bottom (13) and in which an atmospheric pressure is generated which is practically equal to or larger than the pressure of the water column measured outside the diving bell (2) as of the lower edge (5) of the diving bell (2) up to the water line (17), and whereby the alluvial deposits (6) are sucked in in situ by a pump (14) and are carried to the place of discharge (16) via a tube (15).
Device to be used with the method according to the invention.