论文部分内容阅读
利用安宁渡水文站1934-2010年系列资料,增加黄河宁夏段2012年实测洪水资料,综合河道地形地貌、河床组成、滩内植物等确定各河段的综合糙率,其中卫宁段为0.020~0.034,青石段为0.018~0.034,以此为基础兼顾跨河建筑物对洪水位的影响,结合相关泥沙预测结果,由下至上逐段推出不同频率洪水的设计水面线、2020年设计水面线、施工期水面线。研究结果表明:考虑2012年洪水的水面线更符合现状河道情况,成果更为合理。
Based on the series of data from 1934-2010 of Anningdu hydrological station, the measured flood data in Ningxia of the Yellow River in 2012 were increased, and the comprehensive roughness of each river section was determined based on the topography and topography of the river, composition of the river bed and plants on the beach. The Weiying section was 0.020 ~ 0.034 for Qingshi Section and 0.018-0.034 for Qingshi Section. Taking into consideration of the influence of cross-river buildings on flood level based on this, combining with the prediction of sediment, the design surface line of floods with different frequencies is launched from bottom to top. In 2020, Construction of the water line. The result shows that the result is more reasonable considering that the waterline of the flood in 2012 is more in line with the status quo of the river.