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特威德河位于澳大利亚新南威尔士州与昆士兰州的交界处,河口拦门沙坝一直倍受航运部门的关注。20世纪60年代修筑了入海防护堤试图阻止沙坝的形成,该措施当时取得了短暂的成功,但一段时间以后,人们发现大量泥沙绕过入海南堤淤积,并且又重新形成新的拦门沙坝。与此同时,位于北岸的世界著名的黄金海岸的泥沙冲淤平衡也遭到破坏,海岸受到海水侵蚀。经协商,一致的解决方案就是利用泥沙搭桥技术使泥沙从入海口的南岸输运到北岸的黄金海岸。
The Tweed River is located at the junction of Australia’s New South Wales and Queensland and the estuary bar has long been the focus of the shipping department. The measures to prevent the formation of sand dams were built in the 1960s when the embankment was built into the sea. At that time, the measure was a brief success. However, after some time it was discovered that a large amount of sediment was bypassed and entered the South Bank to re-form a new barricade Sand dam. In the meantime, the balance of sediment deposition and erosion in the world-famous Gold Coast on the northern bank has also been damaged and the coast has been eroded by seawater. After consultation, a consistent solution is to use sediment bypass technology to transport sediment from the south bank of the estuary to the Gold Coast on the north shore.