CAJ | 학술논문

利用实测资料，对小浪底水库拦沙运用初期长期枯水枯沙作用下黄河下游游荡型河段河势的变化特点和已有工程的适应情况进行了分析。结果表明：1999年10月以后，进入下游的65％的流量集中在1000 m3/s以下；与1986-1999年相比，游荡型河段主流摆幅明显减小，除赵口-黑岗口河段主流最大摆幅超出治导线外，其他河段河势摆幅基本控制在整治工程控制范围内；含沙量偏低使河岸受到冲刷，主槽宽展，心滩增多；低含沙量及河脖滩尖冲蚀造成工程靠溜位置普遍下挫，送溜不力，河势坐弯。建议对尚未控制好的河段局部辅以双岸整治措施，以稳定河势，减轻防洪压力。
이용실측자료，대소랑저수고란사운용초기장기고수고사작용하황하하유유탕형하단하세적변화특점화이유공정적괄응정황진행료분석。결과표명：1999년10월이후，진입하유적65％적류량집중재1000 m3/s이하；여1986-1999년상비，유탕형하단주류파폭명현감소，제조구-흑강구하단주류최대파폭초출치도선외，기타하단하세파폭기본공제재정치공정공제범위내；함사량편저사하안수도충쇄，주조관전，심탄증다；저함사량급하발탄첨충식조성공정고류위치보편하좌，송류불력，하세좌만。건의대상미공제호적하단국부보이쌍안정치조시，이은정하세，감경방홍압력。
The paper summarized the features of the river regime changes in the wandering channel of the lower Yellow River and the adaptability of the training works to the river-regime due to river regime low regimes of flow and sediment with the measured data. The results show that:a) 65% of the flow rates released into the downstream is found smaller than 1 000 m3/s since Oct. 1999;b)amplitudes of the river regime changes af-ter Oct. 1999 become smaller than those in 1986-1999 and the channel of the maximum amplitudes in the reach from Zhaokou to Heigangkou is found beyond the alignment lines while the channel in the other reach is controlled within the alignment lines in most cases;c)low sediment con-centration leads to bank erosion,main channel widening and more channel bars formed;d)both low sediment concentration and erosion to the point bars at the narrowest deflecting site cause the site to shift downstream,resulting in weaker deflecting effects and forming of local bends. It is sugges-ted that the channel reach which is not well controlled should be regulated by planting the training works on the opposite banks so as to stabilize the channel river regime for the purpose of mitigating the flooding.