| 刘晓燕,侯素珍,常温花.黄河内蒙古河段主槽萎缩原因和对策[J].水利学报,2009,40(9): |
| 黄河内蒙古河段主槽萎缩原因和对策 |
| Cause of main channel shrinkage occurred to the Inner Mongolia reaches of Yellow River |
| |
| DOI： |
| 中文关键词: 黄河内蒙古河段 主槽萎缩 淤积 十大孔兑 |
| 英文关键词: main channel shrinkage sediment deposition tributaries Inner Mongolia reaches of Yellow River |
| 基金项目: |
|
| 摘要点击次数: 2924 |
| 全文下载次数: 815 |
| 中文摘要: |
| 通过对黄河内蒙古河段1960—2006年典型断面输沙量资料的分析表明，巴彦高勒—头道拐河段淤积主要源自其支流十大孔兑洪水的影响。1969—1986年汛期来水虽较前期减少约20%，但由于来沙减少达54％，故河床淤积量不大；1987年以后，由于龙羊峡和刘家峡水库的调蓄运用，造成该河段汛期水量和洪峰流量减小，使得区间来沙对内蒙古河段淤积的影响更加显著。进一步分析表明，要改变内蒙古河段主槽萎缩趋势，一方面要保障其洪水量级尽可能达到1 500～2 000m3/s以上，另一方面要加强该区间重点产沙区的水土流失治理。 |
| 英文摘要: |
| In the past 20 years the Inner Mongolia reaches of Yellow River was under the situation of sediment deposition and resulted in serious shrinkage of main channel. The analysis on the observation data from 1960 to 2006 found that the deposited sediment in the riverbed of this reaches was caused by the floods occurred in this area and flowed into the River from 10 tributaries distributed along this reaches. Before 1986, the deposited sediment is not significant because of more runoff and larger floods happened to the flood seasons. After then, the influence of the sediment income on the deposition became more and more obvious due to the decrease of runoff and magnitude of flood caused by the regulation of upstream reservoir and reduction of precipitation. In order to improve this situation the flood discharge coming from upper reaches should be larger than 1500～2000m3/s. At the same time, the water soil conservation in the ten tributaries watershed must enhanced to control the soil erosion. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |