WATER BOTTOM LEVELING DEVICE FOR PUMP DREDGER AND WATER BOTTOM LEVELING METHOD OF USING THE SAME

PROBLEM TO BE SOLVED: To provide a water bottom leveling device for a pump dredger and a water bottom leveling method of using the same, for reducing an outbreak quantity, and capable of also efficiently leveling a water bottom part, in dredging work of using the pump dredger.SOLUTION: A pump dredger 1 comprises a ladder 3 for inserting the tip side into the water toward a water bottom part A from a dredger body 2, turning means for turning the ladder 3, excavation means 5 arranged in a ladder tip part, a sand discharge pipeline for opening a suction port in the ladder tip part and a suction pump connected to the sand discharge pipeline, and comprises leveling tools 24a and 24b supported via a support body 23 by a side part of the ladder 3, and a sediment pressing surface of the leveling tools 24a and 24b is turned in the turning direction of the ladder, and leveling work of the water bottom part A is executed simultaneously with pump dredging work.SELECTED DRAWING: Figure 1 【課題】ポンプ浚渫船を使用した浚渫作業において、余掘り量の低減を図れ、且つ、効率的に水底部を均すことができるポンプ浚渫船用水底均し装置及びそれを使用した水底均し方法の提供。【解決手段】浚渫船本体２から先端側を水底部Ａに向けて水中に挿入されるラダー３と、ラダー３を旋回させる旋回手段と、ラダー先端部に配置された掘削手段５と、ラダー先端部に吸引口を開口させた排砂管路と、排砂管路に接続された吸引ポンプとを備えたポンプ浚渫船１にあって、ラダー３の側部に支持体２３を介して支持された均し具２４ａ，２４ｂを備え、均し具２４ａ，２４ｂの土砂押圧面がラダーの旋回方向に向けられ、ポンプ浚渫作業と同時に水底部Ａの均し作業を行えるようにした。【選択図】図１