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5. 黑龙江抚远水道河床演变数学模型计算分析

黑龙江抚远水道河床演变数学模型计算分析

来源 :泥沙研究 | 被引量 : 0次 | 上传用户：jwh777

【摘 要】

：

抚远水道是连接黑龙江与乌苏里江的唯一水道,战略意义十分重要.通过构建抚远水道平面二维混合网格水沙数值模型,研究百年一遇频率洪水条件下抚远水道的水力特性,预测远期抚远水道的冲淤分布和河床演变趋势.研究结果表明,在百年一遇频率洪水条件下,抚远水道进出口水位分别约为42.2 m和41.0 m.抚远水道内流速沿程减小,入口和出口处流速分别约为1.2 m/s和0.4 m/s.抚远水道占黑龙江的分流比为13.7％～15.1％,且随着流量增大而增大.抚远水道总体河势相对稳定,河道内河床基本处于微冲或冲淤平衡状态,圈河岛

【作 者】

：

卢玉海 黄海 关见朝 王大宇 

【机 构】

：

黑龙江省水利水电勘测设计研究院,黑龙江哈尔滨150080;中国水利水电科学研究院泥沙研究所,北京100048

【出 处】

：

泥沙研究

【发表日期】

：

2021年6期

【关键词】

：

黑龙江 乌苏里江 抚远水道 水沙数学模型 冲淤演变 

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论文部分内容阅读

抚远水道是连接黑龙江与乌苏里江的唯一水道,战略意义十分重要.通过构建抚远水道平面二维混合网格水沙数值模型,研究百年一遇频率洪水条件下抚远水道的水力特性,预测远期抚远水道的冲淤分布和河床演变趋势.研究结果表明,在百年一遇频率洪水条件下,抚远水道进出口水位分别约为42.2 m和41.0 m.抚远水道内流速沿程减小,入口和出口处流速分别约为1.2 m/s和0.4 m/s.抚远水道占黑龙江的分流比为13.7％～15.1％,且随着流量增大而增大.抚远水道总体河势相对稳定,河道内河床基本处于微冲或冲淤平衡状态,圈河岛区域冲淤变化较为明显,圈河岛南汊淤积厚度普遍为1 m左右.

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