| 摘要 |
PROBLEM TO BE SOLVED: To provide a dredging inlet structure for solving a problem that it is necessary to prevent sludge from being rolled up to scatter pollutants underwater in order to dredge and remove the bottom sludge contaminated by radioactive cesium, etc., however a conventional dredger cannot meet such requirement.SOLUTION: A dredging inlet structure, etc., is provided which comprises: an upper surface with at least a portion sticking out from the lower surface relatively in the traveling direction; a lower surface with at least a portion retreated from the upper surface relatively in the traveling direction; a take-in opening sandwiched in between the upper surface and the lower surface and opened in the traveling direction; a fence provided in the take-in opening and for preventing an object clogging a pipe when sucked from entering the take-in opening; and a suction pipe.SELECTED DRAWING: Figure 2 |
