The Xiaolangdi Reservoir has entered the later sediment-retaining period, and new sediment transport phenomena and channel re-estab- lishing behaviors are appearing. A physical model test was used to forecast the scou...The Xiaolangdi Reservoir has entered the later sediment-retaining period, and new sediment transport phenomena and channel re-estab- lishing behaviors are appearing. A physical model test was used to forecast the scouring and silting trends of the lower Yellow River. Based on water and sediment data from the lower Yellow River during the period from 1960 to 2012, and using a statistical method, this paper analyzed the sediment transport in sediment-laden flows with different discharges and sediment concentrations in the lower Yellow River. The results show that rational water-sediment regulation is necessary to avoid silting in the later sediment-retaining period. The combination of 3 000 m^3/s 〈 Q 〈 4 000 m^3/s and 20 kg/m^3 〈 S 〈 60 kg/m^3 （where Q is the discharge and S is the sediment concentration） at the Huayuankou section is considered an optimal combination for equilibrium sediment transport in the lower Yellow River over a long period of time.展开更多
The Xiaolangdi multipurpose dam is located at the exit of the last gorge on the middle reaches of the Yellow River, 130 km downstream of Sanmenxia and 128 km upstreamfrom Huayuankou, Zhengzhou. It serves for flood con...The Xiaolangdi multipurpose dam is located at the exit of the last gorge on the middle reaches of the Yellow River, 130 km downstream of Sanmenxia and 128 km upstreamfrom Huayuankou, Zhengzhou. It serves for flood control, ice jam control, siltation control, irrigation, water supply and hydropower generation. The project consists of 10 intake towers, nine flood & sediment tunnels, six power tunnels, an underground powerhouse and a zoned earth and rockfill dam with a sloping展开更多
基金supported by the National Natural Science Foundation of China(Grants No.51039004 and No.51079055)the High-Level Personnel Research Start-Up Funds of North China University of Water Resources and Electric Power(Grant No.201403)the Science and Technology Research Project of the Education Department of Henan Province(Grant No.14A570001)
文摘The Xiaolangdi Reservoir has entered the later sediment-retaining period, and new sediment transport phenomena and channel re-estab- lishing behaviors are appearing. A physical model test was used to forecast the scouring and silting trends of the lower Yellow River. Based on water and sediment data from the lower Yellow River during the period from 1960 to 2012, and using a statistical method, this paper analyzed the sediment transport in sediment-laden flows with different discharges and sediment concentrations in the lower Yellow River. The results show that rational water-sediment regulation is necessary to avoid silting in the later sediment-retaining period. The combination of 3 000 m^3/s 〈 Q 〈 4 000 m^3/s and 20 kg/m^3 〈 S 〈 60 kg/m^3 （where Q is the discharge and S is the sediment concentration） at the Huayuankou section is considered an optimal combination for equilibrium sediment transport in the lower Yellow River over a long period of time.
文摘The Xiaolangdi multipurpose dam is located at the exit of the last gorge on the middle reaches of the Yellow River, 130 km downstream of Sanmenxia and 128 km upstreamfrom Huayuankou, Zhengzhou. It serves for flood control, ice jam control, siltation control, irrigation, water supply and hydropower generation. The project consists of 10 intake towers, nine flood & sediment tunnels, six power tunnels, an underground powerhouse and a zoned earth and rockfill dam with a sloping
