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A beach without water

机译:没有水的海滩

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Two years after the contract was signed, the Pearl Qatar reclamation is now completed. In frastructure and construction contractors have begun building on a 400 ha site where, two years ago, there was nothing else but a big shallow pearling bank. By contrast to common perception, this quite exceptional project has been executed in the dry, behind protective dykes that will now be cut for flooding the marinas, beaches and blue water areas. A dredger's dilemma inspired this unique, and in fact bold execution method. A large part of the seabed consists of hard rock at a very shallow site, meaning that it is too hard to be dredged by a small dredge and too shallow for a large dredge such as QDC's Al Mahaar to operate in due to required draught and minimum cutting depth. This dilemma was overcome by working in the dry, which not only required an extensive fleet of dumpers, trucks, excavators, bulldozers and loaders, but also the construction of temporary bunds and dewatering of the boxes. As an additional advantage of the dry execution method, excavated rock from behind the dykes could be used for the construction of shore protection.
机译:合同签订两年后,卡塔尔珍珠填海工程现已完成。在基础设施和建筑承包商中,承包商已经开始在占地400公顷的场地上建筑,两年前,这里除了大型珍珠浅滩以外,什么也没有。与通常的看法相反,这个非常出色的项目是在干旱的保护性堤坝后进行的,现在将这些堤坝切割以淹没码头,海滩和蓝色水域。挖泥船的困境激发了这种独特且实际上是大胆的执行方法。海底的很大一部分是在很浅的地方由坚硬的岩石组成的,这意味着很难通过小挖泥机进行挖泥,而对于像QDC的Al Mahaar这样的大挖泥船来说,由于所需的吃水和最低限度,挖泥船太浅了切割深度。通过在旱地工作克服了这一难题,不仅需要大量的自卸车,卡车,挖掘机,推土机和装载机,而且还需要建造临时堤岸和对箱子进行脱水。作为干法施行方法的另一个优势,可以使用从堤坝后方挖出的岩石来建造海岸保护设施。

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  • 来源
    《World Dredging》 |2006年第10期|p.16-1820-21|共5页
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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 海洋学;
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