Analysis on the law of sediments deposition in the three gorges reservoir

2nd International Conference on Materials Science, Energy Technology and Environmental Engineering

材料科学;能源学;生态环境科学

Yinjun, Zhou^1,2 ; Jie, Sun^3 ; Yuqin, Zhang^1 ; Xia, Yan^1

Changjiang River Scientific Research Institute, Wuhan

430010, China^1

Collaborative Innovation Center for Geo-hazards and Eco-Environment in Three Gorges Area, Yichang

443002, China^2

Changjiang Waterway Planning Design and Research Institute, Wuhan

430011, China^3

关键词: Channel widths;    Three gorges reservoir;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/81/1/012050/pdf
DOI  :  10.1088/1755-1315/81/1/012050

来源: IOP

【 摘 要 】

Since the impoundment of the Three Gorges Reservoir, there were always sustainable deposition, and by December 2015, it was a total of 1 billion 604 million t. Deposition mainly concentrated in the perennial backwater area downstream of Qingxichang station, the deposit amount is 1 billion 486 million t, accounting for 92.7% of the total sedimentation amount; the deposit amount of Qingxichang to Zhutuo section is 118 million t, accounted for 7.3% of the total sedimentation amount. After the impoundment of Three Gorges Reservoir into the 175m trial in 2008, the scope of deposition exhibits extension, the deposit amount of Qingxichang to Zhutuo section increases obviously. The spatial distribution of deposition is related to the channel width and the distance from the dam, deposition in front of the dam and the gully section of Fengjie to Fuling is the largest, while the deposition occurs in 2008 to 2010 in the upstream of Fuling, and it turns to scour after 2010.