PROBLEM TO BE SOLVED: To provide a suction dredging device and a method capable of efficiently dredging while preventing diffusion to the periphery of a bottom material, when dredging the bottom material such as a lake and a river.SOLUTION: This suction dredging device 10 comprises a glove bucket 20 having a pair of shells 11 and 12 freely opening-closing for dredging, suction means 30 connected to a suction port 32 of the glove bucket, agitation means 40 connected to an agitation port of the glove bucket, a water supply port 50 provided in the glove bucket and a partition member 51 provided so as to adjust the cross-sectional area in the flow direction to the suction port from the water supply port in the glove bucket in a state of closing the pair of shells, and in a state of holding sediment of a dredging object in the glove bucket together with water in its vicinity by closing the shells in the water, the sediment and the water are agitated in the glove bucket by the agitation means, and a mixture of the sediment and the water by agitation is discharged to the outside by sucking by the suction means, and the agitation by the agitation means and suction-discharge by the suction means are continued while supplying the outside water from the water supply port in response to its suction.SELECTED DRAWING: Figure 1

    【課題】湖沼・河川などの底質を浚渫する際に、底質の周囲への拡散を防止しながら効率よく浚渫を行うことができる吸引浚渫装置・方法を提供する。【解決手段】この吸引浚渫装置10は、浚渫のため開閉自在な一対のシェル11,12を有するグラブバケット20と、グラブバケットの吸引口32に接続された吸引手段30と、グラブバケットの攪拌口に接続された攪拌手段40と、グラブバケットに設けられた給水口50と、一対のシェルが閉じた状態でグラブバケット内における給水口から吸引口への流れ方向断面積を調整するように設けられた仕切部材51と、を備え、シェルが水中で閉じることで浚渫対象の土砂をその近傍の水とともにグラブバケット内に保持した状態で、グラブバケット内において土砂と水を攪拌手段により攪拌し、攪拌による土砂と水との混合物を吸引手段により吸引して外部へと排出し、その吸引に応じて給水口から外部の水が供給されながら攪拌手段による攪拌と吸引手段による吸引・排出とを続行する。【選択図】図1


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    Title :

    SUCTION DREDGING DEVICE AND SUCTION DREDGING METHOD


    Additional title:

    吸引浚渫装置および吸引浚渫方法


    Contributors:

    Publication date :

    2016-07-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    E02F Baggern , DREDGING / B66C Krane , CRANES



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