RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2023, Vol. 32 >> Issue (2): 331-338.doi: 10.11870/cjlyzyyhj202302009

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Study on Comprehensive Utilization of Dredged Soil in Yangtze Estuary Channel During the 14th Five-year Period

CHENG Hai-feng1,2, LIU Jie1,2, CHEN Fu-kui3, FU Gui3, WANG Zhen-zhen1,2, XIE Ying-fang1,2   

  1. (1. Shanghai Estuarine and Coastal Science Research Center, Shanghai 201201, China;2. Key Laboratory of Estuarine and Coastal Project, Ministry of Transport, Shanghai 201201, China;3. Yangtze Estuary Waterway Administration Bureau, Ministry of Transport, Shanghai 200003, China)
  • Online:2023-02-20 Published:2023-03-09

Abstract: Based on the investigation of the amount, quality and utilization situation of dredged soil in Yangtze Estuary navigation channel, this paper evaluates the suitability of dredged soil for different utilization modes, and puts forward suggestions for comprehensive utilization of dredged soil during the 14th Five-year Period. The conclusions are drawn as follows: the annual output of channel dredged soil is estimated to be more than 58 million m3 in the 14th Five-year Period, and the soil quality is fine and clean. The dredged soil from the South Channel and Yuanyuansha section of Deepwater Channel (SYDC) and the South Passage Channel (SPC) upstream of Jiuduansha Lightship (JL) is suitable for diking and filling, while the dredged soil from the Middle-lower section of North Passage of Deepwater Channel (MNDC) and the SPC downstream of JL can be used for wetland restoration and filling. In the 14th Five-year Period, it’s suggested to use dredged soil of the MNDC to restore Hengsha Shoal, and to use dredged soil of SPC to reserve resources in the siltation promoting project of East Nanhui Shoal. On the basis of solving of relevant constraints, the dredged soil of the MNDC and the SPC downstream of JL can be used for conservation and restoration of Jiuduansha wetland, and the dredged soil of the SYDC and the SPC upstream of JL can be used for embankment construction in the adjacent wading project.

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