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ARMOR 1 Construction Continues At Thoma-Sea
| 题名： | ARMOR 1 Construction Continues At Thoma-Sea |
| 正文语种： | eng |
| 作者： | FRANK MCCORMACK |
| 摘要： | The Vicksburg Engineer District's Mat Sinking Unit (MSU), rarely ever even seen by the public but nonetheless hard at work each low-water season, is an indispensable part of the Corps' flood control and navigation mission on the Lower Mississippi River. For about 75 years, the current unit, based in Vicksburg, Miss., and its crew of close to 300 have been armoring the river-lining the river bottom from the bank toward the channel-with articulated concrete mattress, or "mat." Doing so stabilizes the river bottom and helps prevent further scouring at problem spots. But the current unit, venerable though it may be, is incredibly vulnerable to unplanned and costly maintenance issues. Gantry cranes; broken-down pneumatic tie tools, jackhammer-like tools that stitch concrete "squares" together to form the mats; mechanical mooring winches; wiring harnesses- virtually all components of the current unit are prone to failure and expensive to fix. On average, the Corps spends between $9 million and $10 million per year on mandatory repairs just to keep the Mat Sinking Unit up and running. |
| 出版年： | 2023 |
| 期刊名称： | The Waterways Jouranl |
| 卷： | 137 |
| 期： | 5 |
| 页码： | 5,8 |
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