摘要
基于1997-2011年黄河尾闾河道及河口实测水深、距离、径流量及泥沙量等数据,分析了调水调沙工程实施10年来对尾闾河道及近岸水下岸坡冲淤变化的影响。研究表明,调水调沙工程的长期实施改善了黄河尾闾河道的水沙搭配状况,形成了有利于河道冲刷的水沙条件,使尾闾河道整体处于冲刷状态。水下岸坡的冲淤状况也受到明显影响：在距入海口较近处,泥沙来源丰富,并在25-35km内不断淤积,淤积速率在10年间介于0.18-0.63m/a;在距入海口较远处,泥沙补给较少致使水下岸坡在35km内受到冲刷,冲刷速率在10年间介于0.045-0.18m/a。研究发现,调水调沙工程的长期实施,不但有利于延长黄河现行入海流路的使用年限,而且显著改变了水下岸坡的冲淤状态,并促进其发育趋向新平衡。
Based on the measured water depths,distances,runoff and sediment loads data of the trail channel of the Yellow River and estuary from 1997 to 2011,the impacts of carrying out of the‘Water and Sediment Regulation＇in 10 years on the trail channel and near- shore of erosion and deposition variation of the underwater bank slope were analyzed. The researches indicated that the long term implementation of the water and sediment regulation engineering had improved the relationship of water and sediment in the trail of the Yellow River,formed a favorable water and sediment conditions,thus made the trail channel in the washed state as a whole. There was obvious influence on the erosion and deposition of the underwater bank slope： from the nearby of the estuary,sediment source was rich,deposited within 25 - 35 km,and the deposition rate was between 0. 18 - 0. 63 m / a in10 years; with less supply sediment in the far away from the estuary,the underwater slope had been erosion within 35 km,and the erosion rate was between 0. 045 - 0. 18 m / a in 10 years. The study found that the long term water and sediment regulation engineering implementation was not only benefit to prolong the current flow of the Yellow River into the sea,but also changed the state of erosion and deposition of the underwater bank slope,while promoted it towards new balance.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2015年第10期86-92,共7页
Journal of Arid Land Resources and Environment
基金
中国科学院"一三五"规划生态突破项目(Y254021031)
国家自然科学基金(41171424
41371104)
中国科学院重点部署项目(KZZD-EW-14)
中国科学院人才专项(Y129091041)资助
关键词
调水调沙
黄河尾闾河道
水下岸坡
water and sediment regulation
the trail channel of the Yellow River
the underwater bank slope
作者简介
王伟（1987-），女，硕士研究生，主要研究方向为河口海岸过程与自然环境，E—mail：greatwang123@163．com
通讯作者：衣华鹏。E—mail：huapengyi@sina．com
