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[1]RAN Da-chuan,LI Zhan-bin,LUO Quan-hua,et al.Approaches of Sustainable Sediment Reduction of Warping Dams in the Middle Reaches of the Yellow River[J].Research of Soil and Water Conservation,2013,20(03):1-5.

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Approaches of Sustainable Sediment Reduction of Warping Dams in the Middle Reaches of the Yellow River

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 03 Page number: 1-5 Column: Public date: 2013-06-28

Title:: Approaches of Sustainable Sediment Reduction of Warping Dams in the Middle Reaches of the Yellow River

Author(s):: RAN Da-chuan¹, LI Zhan-bin², LUO Quan-hua³, LI Peng², TIAN Shi-min¹; 1. Yellow River Institute of Hydraulic Research, Yellow River Conservancy Commission, Zhengzhou 450003, China;
2. Xi’an University of Technology, Xi’an 710048, China;
3. Xifeng Soil and Water Conservation Experimental Station, Yellow River Conservancy Commission, Qingyang, Gansu 745000, China

Keywords:: warping dams; sustainability; technical approaches of sediment reduction; Dali River

CLC:: S157

DOI:: -

Abstract:: The significant effects of the warping dams on flood and sediment reduction in the middle reaches of the Yellow River have been evident since 1980s. So the researches are necessary to figure out the sustainability of the sediment reduction of the warping dams. Dali River, the secondary branch of the Yellow River, is selected as the study area for the most warping dams in this basin. The total amount of flood and sediment reduction of terraces, forest lands, grasslands and warping dams is obtained by the soil conservation method. The sediment reduction amount and processes of warping dams are related, and the technical approaches for the sustainability sediment reduction are dealt with. The results indicate that 75 000 t deposit may overlap 1 hm² farmland of warping dam and it will take 17 years to increase the farmland of warping dam to 3.33 hm² per square kilometer in Dali River basin. Various factors such as development rate, density, scale, construction sequence, and dam height should be taken into consideration for realizing the sustainable sediment reduction. The density of warping dams should be increased to 2.5 ind/km² and the proportion of large dams, middle dams and little dams should be set as 1:2.5:5.5. The warping dams should be constructed from downstream to upstream. On the other hand, the other measures including follow-up construction, treating the slope and gully synchronously, preventing from the super flood, clarifying the rights, management and maintaining, scientific researches on the dam construction also should be paid more attention to and emphasized.

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