巴彦高勒水文站断面冲淤变化及过流能力分析  

Analysis of Erosion-Deposition Variation and Conveyance Capacity of Bayangaole Hydrological Station

作　　者：谢学东[1] 赵文荣 谢涛 张健 杨桂珍[1] XIE Xuedong;ZHAO Wenrong;XIE Tao;ZHANG Jian;YANG Guizhen(Ningmeng Bureau of Hydrology and Water Resources,YRCC,Baotou 014030,China)

机构地区：[1]黄河水利委员会宁蒙水文水资源局

出　　处：《人民黄河》2019年第7期48-50,75,共4页Yellow River

摘　　要：通过分析巴彦高勒水文站历史断面形态、同水位面积、平滩流量、水位流量关系线变化,给出了水沙变化条件下巴彦高勒断面冲淤变化特征及现状过流能力。结果表明:该站河床冲淤变化较大,年内变化一般表现为封河期淤积、开河期冲刷,汛期冲刷、汛后至次年封河期淤积;同水位断面面积和平滩流量均随水沙条件改变有明显减小趋势;与1981年相比,近期同流量水位明显抬高,同水位过流能力明显减弱;参照邻近年份曲线趋势延长法绘制的高水报汛曲线及过流能力更接近该站的实际情况。The variation of section configuration, area of the same water level, bank-full discharge and stage-discharge relationship of Bayan-gaole Hydrologic Station was analyzed and the varying behaviors of scoring and silting and current conveyance capacity of the section due to the changes in flow and sediment regimes was given. The result shows that the riverbed erosion and deposition changes greatly, which repre-sents as scour in break-up period and flood season and deposit in freeze-up period and non-flood season. The area of the same water level and bank-full discharge have an obvious decreasing trend, the water level of the same runoff and the conveyance capacity at the same water level are decreased significantly compared with 1981. The flood reporting curve and flow capacity are determined by the curve trend extension method which is closer to the actual situation of the hydrological station.

关 键 词：冲淤变化 过流能力 平滩流量 巴彦高勒水文站 

分 类 号：P333[天文地球—水文科学] TV882.1[水利工程—水文学及水资源]