摘要
根据水流输沙机理及潼关河段射流清淤的野外试验资料,分析了影响潼关河段输沙能力的因素及射流船的射流冲刷效果,并初步计算了射流清淤对提高输沙能力的作用。研究认为,潼关河段的射流清淤,一方面通过射流装置冲起大量泥沙,提高了水流的含沙量,另一方面改善了清淤河段的河槽形态,使之趋于窄深,从而提高了河道输沙能力。初步结果表明,射流清淤使河道增加的输沙量是射流冲起泥沙量的1.6倍左右。
The paper analyzes the factors that effect sediment-transporting capacity and effect of jet flow in Tongguan section and preliminarily calculates the function of sedimentation cleaning by jet flow for increasing sediment-transporting capacity based on the mechanism of sediment transport and field testing data of sedimentation cleaning by jet flow at Tongguan section. It is considered through the study that on the one hand it makes water muddy through jet pump and increases sediment concentration of flow, on the other hand it improves the jetted channel morphology, makes the channel narrower and deeper and increases the sediment-transporting capacity of the channel. It is shown by the preliminary results that the increased volume of sediment transport through sedimentation cleaning by jet flow is about 1.6 times of that by jet flow.
出处
《人民黄河》
CAS
北大核心
2004年第6期29-30,共2页
Yellow River
基金
九五"国家重点攻关项目(98-928-02-02-03)
黄委"1 999~ 2 0 0 1年黄河潼关河段清淤工程"项目
关键词
潼关河段
黄河
输沙能力
射流清淤
冲刷
scouring effect, sediment-transporting capacity, sedimentation cleaning by jet flow, Tongguan section, the Yellow River
