Author(s): Jinwu Tang; Weiguo Hou; Yitian Li; Xingying You
Linked Author(s):
Keywords: Yangtze River; The Three Gorges Project (TGP); Chenglingji station; Stage changes
Abstract: By analysing measured data of last 50 years, it’s found that the stage changes at Chenglingji Station in middle Yangtze River depends on the erosion/deposition amount of Luoshan~Hankou Reach. After the operation of the Three Gorges Project (TGP), the erosion amount in Luoshan~Hankou Reach comes down to the discharge of coarse sand (d>0.085mm) at Yichang Station, Hankou (excluding Hanjiang) Station and that from bed erosion in Yichang~Chenglingji Reach. Through estimating the coarse sand amount that scoured up in Yichang~Chenglingji Reach and that at Hankou (excluding Hanjiang) Station, it’s discovered that the max erosion amount in Chenglingji~Hankou Reach is 0.95 billion tons. When the discharge at Luoshan Station is 10000~60000 m3/s, stage at Chenglingji Station will drop by 1.26~0.32 m from before the operation of the TGP. These conclusions have significant implications for the flood control, navigation channel regulation in Jingjiang and Dongting Lake area.
Year: 2014