摘要
为满足城市防洪预警决策的需要,根据松花江流域的水动力特点,结合遥感影像及数字高程数据,利用Delft3D模型对松花江哈尔滨段主干流的水动力情况进行了模拟。利用老头湾水文监测站2013年的实测数据对模型模拟结果进行了验证,计算水位和实测水位的最大水位差为0.36 m,模型能较好的呈现该江段的水动力情况。由于受降水量、地形等因素的影响,在枯水期时,水深基本上在4.7 m左右,丰水期时,水深增加到5.8 m左右。无论枯水期还是丰水期,松花江哈尔滨段上下游水位差较小,基本上趋近于零。松花江哈尔滨段水流平稳,单向流动,少有回流、涡旋等现象。
To meet the needs of the urban flood early warning and decision-making,according to the hydrodynamic features of Songhua River and combined with remote sensing image and digital elevation data,the Delft3 D model was used to simulate the hydrodynamic conditions of main stream river network of Songhua River in Harbin. The whole year hydrodynamic data in 2013,which measured from laotou Bay hydrological stations,was used to verify the simulation results. The biggest difference between measured and simulated results of water level is 0. 36 metres,which shows the model could better present the hydrodynamic conditions of the River sections. Due to the effect of factors such as rainfall,topography,in the low-water period,the water depth is about 4. 7 metres,in the high-water period,the water depth is increased to about 5. 8 metres. Regardless of low-water period or high-water period,the water level difference is small between the upstream and downstream of Songhua River in Harbin,it is close to zero basicly. The flow of Songhua River in Harbin is smooth and unidirectional,backflow,vortex or other phenomena are rare.
出处
《自然灾害学报》
CSCD
北大核心
2015年第2期172-177,共6页
Journal of Natural Disasters
基金
国家科技重大专项课题(2013ZX07201007-006)
国家自然科学基金项目(41171021)
黑龙江省自然科学基金项目(C201022)
哈尔滨师范大学博士创新基金项目(HSDBSCX2013-03)
关键词
松花江哈尔滨段
水动力模型构建
防洪预警决策
Songhua River's Harbin section
establishment of hydrodynamic model
flood early warning and prevention decision-making
