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Shaping and maintaining a medium-sized main channel in the Lower Yellow River

ISSN号：1001-6279
期刊名称：《国际泥沙研究：英文版》
时间：0
分类：TV882.1[水利工程—水利水电工程] S275[农业科学—农业水土工程;农业科学—农业工程]
作者机构：[1]Prof. and Vice President, State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin(SKL-WAC), China Institute of Water Resources and Hydropower Research (IWHR), Beijing 100038, China, [2]International Research and Training Center on Erosion and Sedimentation (IRTCES), Beijing 100048, China., [3]Prof., IRTCES, Beijing 100048, China. E-mail: chenjg@iwhr.com, [4]Prof., SKL-WAC, IWHR, Beijing 100048, China
相关基金：supported by the Science Fund for Creative Research Groups(50721006);the Commonweal Research and Special Funding Project of the Ministry of Water Resources(200701003)

作者： Chun-hong HU[1,2], Jian-guo CHEN[3], and Qing-chao GUO[4]

关键词：黄河下游, 渠道, 维护, 来水来沙条件, 平滩流量, 通道宽度, 中型, 泥沙浓度, The Lower Yellow River, Xiaolangdi Reservoir, Bankfull discharge, Medium sizechannel, Flow and sediment condition

中文摘要：

这份报纸从 1950 ～ 2003 用测量数据在更低的黄河学习在满满的分泌物，侧面的生气的节变化和到来的流动和沉积状况之间的关系。自从 1950，满满的分泌物显然减少了，到流动深度的隧道宽度的比率增加了。批评年度平均到来的沉积系数(定义为沉积集中的比率排出) 并且分别地，在 Huayuankou 车站的分泌物为从 Huayuankou 发生在活动范围到 Lijin 的没有积聚的免职是约 0.012 和 1,850 m3 s1。在这个基础上，一个数学模型被用来在不久的将来在可能的到来的流动和沉积条件下面在更低的黄河和它的相应满满的分泌物学习主要隧道的规模。影响主要隧道的规模的主要因素被分析，并且测量塑造并且坚持说一条中型的隧道被讨论。结果显示出在塑造主要隧道上免除 Xiaolangdi 水库的各种各样的水和沉积联合的效果并且建议在最近的到来的流动和沉积条件下面，与满满的分泌物塑造并且维持一条中型的隧道是可能的近似 4,000 m3 s1。

英文摘要：

This paper studies relations between bankfull discharge, lateral cross section variation and the incoming flow and sediment condition in the Lower Yellow River using measured data from 1950 to 2003. Since 1950 the bankfull discharge has obviously decreased and the ratio of channel width to flow depth has increased. The critical annual average incoming sediment coefficient （defined as the ratio of sediment concentration to discharge） and discharge at the Huayuankou station are approximately 0.012 and 1,850 m3 s＂l, respectively, for no accumulative deposition occurring in the reach from Huayuankou to Lijin. On this basis, a mathematical model is used to study the scale of the main channel in the Lower Yellow River and its corresponding bankfull discharge under possible incoming flow and sediment conditions in the near future. The main factors influencing the scale of the main channel are analyzed, and measures to shape and maintain a medium-sized channel are discussed. The results show the effect of various water and sediment combinations released from the Xiaolangdi Reservoir on the shaping of the main channel and suggest that under recent incoming flow and sediment conditions, it is possible to shape and maintain a medium-sized channel with a bankfull discharge of approximate 4,000 m3 s-1.