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Case study of application geotextile tube in the construction of sea dike and shore protection

机译：土工布管在堤防建设中的应用案例研究

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Recently, because of the shortage of natural rock, traditional forms of the river and coastal structures have become very expensive to build and maintain. Therefore, the materials used in hydraulic and coastal structures are changing from the traditional rubble and concrete systems to the cheaper materials and systems. One of these alternatives employs geotextile tube technology in the construction of coastal and shore protection structures, such as embankment, groins, jetties, detached breakwaters and so on. Geotextile tube technology has changed from being an alternative construction technique and, in fact, has advanced to become the most effective solution of choice. Erosion problems in coastal zones are become increasingly serious due to the development of artificial activities related to the expansion of city functions, industrial complexes and harbour facilities, as well as the removal of sea sand for use in This erosion motion accelerates the regression of the coastal cliff due to the regression of the dunes or the shoreline. In addition, the regression leads to loss of real estate in the hinterland and ruins the shock-absorbing zone between land, and sea. Therefore, the destruction of the dunes may lead to a loss of the habitat or egg-laying grounds of living creatures. In addition, the erosion motion of coastal beach zones destroys the living sites of inhabitants who live in coastal beach zones, and the erosion problem harms the local economy by decreasing the number of visitors. The sea dikes can be easily damaged by the attack of seismic sea wave (Tsunami) due to massive earthquake like the Great East Japan Earthquake in 2011. For these reasons, concern is increasing for the protection of coastal line. Many nations are striving to prevent damage to such zones, as are private organizations and local self-governments. One such preventive effort is beach nourishment or construction of the coast structures. Geotextile containment such as small sandbag has been adopted for the construction of civil structures in the past, large volume geotextile containers are being applied widely in consideration of economical and easy installation, and also for the minimization of environmental effects. Especially, contaminated soil and sediments dredged from port area are utilized to fill in geotextile containment for reclamation. Geotextile containment is widely classified into geotextile bag, geotextile tube, and geotextile containment, and they are filled with soil to be shaped of structure. The filling method is normally hydraulic filling by means of pumping, and also mechanical method can be applied according to the site condition. Thus, Shore erosion is currently causing millions of dollars worth of damage to shorelines and public properties not only along the east coast of Korea but also around the world. Little else needs to be said to emphasize that, without adequate protection, a very significant part of our coastline will fall prey to the ravages of the sea and to man himself.
机译：最近，由于天然岩石的短缺，传统形式的河流和沿海结构的建造和维护变得非常昂贵。因此，用于水力和沿海建筑的材料正从传统的碎石和混凝土系统转变为更便宜的材料和系统。这些替代方案之一是在沿海和海岸保护结构（例如路堤，腹股沟，码头，分离的防波堤等）的构造中采用土工布管技术。土工布管技术已经从一种替代的建筑技术中发生了变化，实际上已经发展成为最有效的选择解决方案。由于与城市功能扩展，工业园区和港口设施扩展有关的人工活动的发展以及用于作业的海砂的清除，沿海地区的侵蚀问题变得越来越严重。这种侵蚀运动加速了沿海地区的回归。悬崖是由于沙丘或海岸线的退缩。此外，回归导致腹地房地产损失，并破坏了陆地与海洋之间的减震区。因此，沙丘的破坏可能导致生物的栖息地或产卵地丧失。另外，沿海海滩区的侵蚀运动破坏了居住在沿海海滩区的居民的居住地，并且侵蚀问题通过减少游客数量而损害了当地经济。由于像2011年东日本大地震这样的大地震，海浪容易受到地震海浪（海啸）的袭击而损坏。因此，人们越来越关注海岸线的保护。许多国家以及私人组织和地方自治政府都在努力防止破坏这些地区。一种这样的预防措施是海滩营养或海岸结构的建设。过去，土工织物的容器，例如小沙袋，已经被用于建筑土木结构，考虑到经济和易于安装以及最小化环境影响，大体积的土工织物容器被广泛使用。特别是，从港口地区挖出的受污染的土壤和沉积物被用于填充土工织物以进行填海。土工织物容器被大致分为土工织物袋，土工织物管和土工织物容器，并且它们被土壤填充以形成结构形状。填充方法通常是通过泵的液压填充，也可以根据现场情况采用机械方法。因此，海岸侵蚀目前不仅对韩国东海岸而且对世界各地的海岸线和公共财产造成价值数百万美元的破坏。无需说什么就可以强调，如果没有足够的保护，我们海岸线的很大一部分将沦为大海和人类自己的猎物。

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