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Island will see its size tripled by 2020

    Hengsha, the smallest of Shanghai’s three islands, will become three times its current 52 square kilometers by 2020 thanks to a series of reclamation projects. The dyke building and land expansion is aimed at developing the island’s eco-system.

    The project was listed as one of the 15 Gold Cup construction projects of 2017 at a meritorious awards for major construction ceremony yesterday.

    According to Shanghai Dredging, the construction side of the reclamation project is in its eighth phase and hydraulic reclamation will start after the spring festival.

    “We have conquered the hardest part which was to close five different dykes simultaneously,” said Yu Meiqing, the company's union director. “By applying sonar technology and autonomous vessels we were able to coordinate with teams at each gap.”

    Yu said the dykes were in a straight line with gaps to be closed adding up to 2.2 kilometers. If a gap was out of sync, it could lead to an inrush of turbulent water that could crush construction of the dyke.

    More than 42.6 million square kilometers of land will be reclaimed from the sea in the eighth phase of the project — equal to the size of Hongkou and Huangpu districts combined.

    The reclamation at Hengsha island is the biggest shoal development project in Shanghai’s history.