DEVICE FOR EXTRACTING SOLID MATERIAL ON THE BACKGROUND OF A WATER EXTEND AND ASSOCIATED METHOD

摘要

This device comprises a set (22) of material sampling on the bottom (12) of the body of water (14), a rising column (48) for raising the solid material and a pump (90) for raising the material. taken by the sampling assembly (22) in the riser (48) to the surface installation (26). The device comprises a separator (42) for forming a flow rich in solid material and a lean stream of solid material, the separator (42) comprising a lower outlet (76) for evacuating the flow rich in solid material. The device includes an upstream hose (40) connecting the pickup assembly (22) to the separator (42) and an intermediate conduit (44) connecting the or each solid material-rich discharge outlet (76) and the column rising (48), the discharge outlet (100) of the pump being stitched on the intermediate pipe (44).