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World DREDGING
| 题名： | World DREDGING |
| 正文语种： | eng |
| 摘要： | When dredging, sediments are loosened, stirred, and dispersed into the water column. These sediments then resettle overtop the freshly dredged area and downstream when a current is present. The Cable Arm Environmental clamshell features an open center and venting system to allow the bucket to descend without water pressure buildup beneath it. The bucket is designed with overlapping side plates to prevent sediment from pushing out the sides, and to seal in the material. Rubber flaps and the material's low center of mass also help seal and enclose the sediment to prevent washout during ascension. Pollutants are absorbed into and adsorbed onto pore water and sediment material. Once disturbed and re-suspended, those trapped pollutants can be released. It is, therefore, imperative that dredging operations minimize the resuspension of contaminated sediment. Another unique feature of the Cable Arm Environmental clamshell is the angle of its cutting edge. The 150° cutting angle allows the bucket to scoop the material with minimal disturbance. Optional debris teeth combined with maximum cutting edge forces ensure each bite makes it to grade, without material spillage, and leaves a near flat surface. |
| 出版年： | 2022 |
| 期刊名称： | World dredging mining & construction |
| 卷： | 55 |
| 期： | 3/4 |
| 页码： | 5-6,8-14,16-18,20,22-24,26-34,36-49 |
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