Serious Deposition in the Lower Yellow River Channel and Countermeasures
The runoff and sediment in the Yellow River show a decreasing trend in recent years, but sedimentation become more serious, especially in main channel. The sedimentation causes river channel shrinking, river bed rising, and flood discharge capacity decreasing for the same water level continuously and seriously, threatening the flood control safety of the lower Yellow River. The analysis results show that the continuous sedimentation in the Lower Yellow River channel can be attributed to the water and sediment variations of the Yellow River, such as the continuous low water and high sediment concentration, a longer flood duration, a lower average flood discharge, a higher sediment concentration in flood, more floods with high sediment concentration, and more floods from upper coarse sediment area. Some other causes for the continuous sedimentation include river channel shrinkage by production levee, the extensior of the Yellow River in estuary area, etc. Countermeasures for controlling sedimentation in the Lower Yellow River channel, such as soil and water conservation works, river channel training, water flow and sediment regulation by reservoirs, sediment diversion, river channel dredging, river course shortening in estuary area, etc. are also discussed in this paper.
the Lower Yellow River channel deposition perched river sedimentation control
Zhang Yanjing Hu Chunhong Wang Yangui
International Research and Training Center on Erosion and Sedimentation, Beijing, 100044, China
国际会议
山东东营
英文
80-92
2007-10-16（万方平台首次上网日期，不代表论文的发表时间）