黄河巴彦高勒到头道拐河段冲淤演变的驱动因子分析（英文）

发布时间：2017-08-07 08:03

  本文关键词：黄河巴彦高勒到头道拐河段冲淤演变的驱动因子分析（英文）

  更多相关文章： Inner Mongolia Yellow River riverbed evolution sedimentation quantity incoming sediment coefficient critical conditions

【摘要】：The Inner Mongolia reaches of the Yellow River face problems of severe sedimentation caused by a variety of complex factors. The sedimentation process in those reaches has been characterized using the sediment balance method, and the key factors affecting the process have been analyzed using the correlation analysis method. The results show that during the period 1952 2012 the Bayangaole(Bayan Gol) to Toudaoguai reaches in Inner Mongolia have undergone successive processes of accumulative sedimentation, then relative balance, and then accumulative sedimentation once again. The total annual sedimentation is 12.0341×10~8 m~3, of which accumulations from July to October account for 95.1% and the reaches from Sanhuhekou to Toudaoguai account for 98.5%. The main factor affecting scouring and sedimentation of the Bayangaole to Sanhuhekou reaches is the combined water and sediment condition. The critical conditions for equilibrium are an incoming sediment coefficient 0.007 kg·s·m~( 6) and a flow discharge 700 m~3·s~( 1). The main factor affecting scouring and sedimentation of the Sanhuhekou to Toudaoguai reaches is the incoming sediment from the tributaries on the south bank and the combined water and sediment condition of the main stream. The critical conditions of the main stream for maintaining equilibrium status are a flow discharge of the main stream exceeding 800 m~3·s~( 1) and a comprehensive incoming sediment coefficient 0.005 kg·s·m~( 6). The incoming sediment from the tributaries has little impact on the main stream when the annual sediment load is less than 0.1×10~8 t. The incoming sediment coefficient of the main stream and the incoming sediment from the tributaries both play vital roles in the riverbed evolution of the Inner Mongolia reaches, but the latter contributes the most.
【作者单位】： Yellow
【关键词】： Inner Mongolia Yellow River riverbed evolution sedimentation quantity incoming sediment coefficient critical conditions
【基金】：National Basic Research Program of China(973 Program),No.2011CB403303 National Science and Technology Support Program during the “12th Five-Year Plan”,No.2012BAB02B03 Basic Research Program of Central Public Research Institutes,No.HKY-JBYW-2014-05
【分类号】：TV147
【正文快照】： 1 IntroductionThe configuration of a riverbed and the manner in which it changes are both essential com-ponents of a riverbed evolution study(Qian et al.,1987).Understanding the mechanisms ofboth water-and sediment-powered riverbed evolution are signific

【相似文献】

中国期刊全文数据库 前9条

1 ;Quantitative relationship of the sedimentation in the lower Yellow River with its mouth channel extension[J];Chinese Science Bulletin;1997年08期

2 ;Effect of suspended sediment grain size on channel sedimentation in the lower Yellow River and some implications[J];Science in China(Series E:Technological Sciences);2009年08期

3 ;Dynamic structures and their sedimentation effects of the Yamen Inlet,Huangmaohai Estuary[J];Science China(Earth Sciences);2011年06期

4 曾庆存,郭冬建,李荣凤;Numerical modelling of silt sedimentation and delta evolution[J];Progress in Natural Science;1995年02期

5 ;Settlement prediction model of slurry suspension based on sedimentation rate attenuation[J];Water Science and Engineering;2012年01期

6 ;Ninth International Symposium on River Sedimentation (Oct. 18-12, 2004, Yichang, China)[J];International Journal of Sediment Research;2004年04期

7 C. B. Singh, L.K. Ghosh;HOW ONE-D AND TWO-D MODELS COMBINED?──Discussion on "One-D and two-D combined model for estuary sedimentation" by Zhang Shiqi[J];International Journal of Sediment Research;2000年03期

8 IRTCES;IN MEMORY OF DR. QIAN NING (N. CHIEN)[J];International Journal of Sediment Research;1987年00期

9 ;[J];;年期

，

本文编号：633573