| 摘要 |
PURPOSE: A complex dredging vessel and a dredging method are provided to easily remove sedimentation foreign substances from the underwater bottom by simultaneously blowing the foreign substances piled up on the underwater bottom with a water jet and sucking in the foreign substances. CONSTITUTION: A complex dredging vessel comprises a grab type bucket, a hood device(20), a hopper(14), pumping facility(15), an anti-twist prevention unit(30), and a spud elevation or descent device(40) of a gear driving method. The grab type bucket is separably mounted on the end of a boom bar(12) of a forklift(11). The hood device is mounted on the boom bar of the forklift in order to be changed with the grab type bucket and comprises a water jet. The hopper and the pumping facility are mounted on the upper surface of a buoyancy unit(10) of the rear part of the forklift. The anti-twist prevention unit is installed at a connection part of a hood(21) of the hood device and a vacuum suction hose(25). The spud elevation or descent device is mounted on the rear end of the buoyancy unit and elevates or drops a spud(42). |
