| 李国英.基于水库群联合调度和人工扰动的黄河调水调沙[J].水利学报,2006,37(12):1439-1446 |
| 基于水库群联合调度和人工扰动的黄河调水调沙 |
| Regulation of water and sediment for the Yellow River based on joint operation of reservoirs and artificial intervention |
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| DOI： |
| 中文关键词: 水库群联合调度 人工塑造异重流 泥沙扰动 |
| 英文关键词: joint operation of reservoir artificial density current artificial intervention of sediment prototype experiment |
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| 摘要点击次数: 2525 |
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| 中文摘要: |
| 为减少小浪底水库及下游河段的淤积，通过水库群的联合调度充分利用万家寨、三门峡、小浪底等干流水库汛前蓄水，在小浪底库区人工塑造异重流，加大小浪底水库的排沙量。同时辅以人工的泥沙扰动措施，调整了库尾段不利的淤积形态。利用进入下游河道水流富余的挟沙能力，在黄河下游“二级悬河”及主槽淤积最为严重的卡口河段实施河床泥沙扰动，减轻下游淤积并扩大下游河道的主槽过洪能力。试验取得了预期效果，小浪底库区淤积三角洲冲刷泥沙1.329亿m3，设计淤积平衡纵剖面以上淤积的3850万m3泥沙全部冲刷消除，小浪底库尾淤积形态得到合理调整；下游卡口河段扰起泥沙164.13万m3，扰沙河段的平滩流量增加了510～640m3/s；下游河道利津以上各河段均发生冲刷，小浪底～利津河段共冲刷0.665亿t。说明通过调水调沙塑造适当的水沙过程，可以遏制黄河下游河道形态恶化的趋势。 |
| 英文摘要: |
| The reservoirs on the main stream of the Yellow River were jointly dispatched to utilize the discharge of surplus water before flood season to form the artificial density current for enhancing the sediment flushing capacity of the Xiaolangdi Reservoir. At the same time the measures for artificial intervention of sediment were adopted to improve the silting situation of the back water reaches of the Reservoir. Besides, by fully utilizing the sediment carrying capacity of the water flow in the downstream reaches of the Reservoir and combining with the artificial intervention the sedimentation of the seriously silted river section in the lower Yellow River was reduced and the flood discharging capacity of the river was elevated. The prototype experiment based on these ideas was carried out in 2004 and the effectiveness and feasibility were verified by the experimental result. |
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