人民黄河Issue(10)：5-8,4.DOI:10.3969/j.issn.1000-1379.2014.10.002
内蒙古十大孔兑对黄河干流水沙及冲淤的影响
Effect of the Ten Major Tributaries in the Inner Mongolia on Runoff and Sediment Load as well as Sedimentation in the Main Stream of the Yellow River
摘要
Abstract
Effects of the ten major tributaries in the Inner Mongolia on variations of runoff and sediment load conditions as well as erosion and sedi-mentation in the main stream of the Yellow River were analyzed. Results show that the sediment load from the ten major tributaries causes an increase of 13. 6% ,26. 8% and 55. 6% in annual average sediment concentration entering into the reach from Sanhuhekou to Toudaoguai;and an increase of 13. 9% ,29. 0% and 57. 6% in annual average incoming sediment coefficient in time periods of 1953 -1968,1969 - 1986 and 1987 - 2010 respec-tively. Sediment loads from Sanhuhekou and the ten major tributaries in the time period of 1953 - 1986 cause an amount of sedimentation of 15. 7million tons and 8. 8 million t and the corresponding sedimentation ratios are 11. 1% and 36. 7% respectively. In the period of 1987 -2010,the a-mount of sedimentation is 19. 0 million t and 1. 39 million t and the corresponding sedimentation ratios are 36. 9% and 50. 2% respectively. In gener-al,the sediment loads from the ten major tributaries cause water and sediment conditions entering the reach from Sanhuhekou to Toudaoguai to deterio-rate further. The sedimentation ratio of the sediment load from the ten major tributaries is bigger than that of the sediment load from Sanhuhekou. As runoff from the upstream decreases gradually,the effect of sediment load from the ten major tributaries becomes more and more significant.关键词
十大孔兑/来沙系数/河道冲淤/内蒙古河段/黄河上游Key words
ten major tributaries/incoming sediment coefficient/erosion and sedimentation/Inner Mongolia reach/Upper Yellow River分类
建筑与水利引用本文复制引用
吴保生..内蒙古十大孔兑对黄河干流水沙及冲淤的影响[J].人民黄河,2014,(10):5-8,4.基金项目
国家重点基础研究发展计划项目（2011CB403304）；水利部黄河泥沙重点实验室开放课题（201303）；“十二五”国家科技支撑计划项目（2012BAB02B02）。 （）
