蓄滞洪区洪水特性对地面沉降的响应研究

发布时间：2018-06-12 04:37

本文选题：蓄滞洪区 + 地面沉降　；参考：《中国农村水利水电》2014年05期

【摘要】：随着累计地面沉降量的增加,蓄滞洪区内的洪水特性发生了一定程度的改变。以贾口洼蓄滞洪区为例,通过对其进行地面沉降分析,构建基于两种不同地面高程资料的二维水动力模型,对大清河百年一遇设计洪水进行演进模拟。通过比较地面沉降前后洪水演进过程、淹没水位和洪水淹没面积的差异,得出如下结论:在入流过程和蓄水量完全相同的情况下,地面沉降会引起贾口洼蓄滞洪区前期洪水演进速度变缓,淹没水位降低,最大淹没范围增大。该结论可为滞洪区的防洪减灾及大清河防洪调度提供决策依据和科学指导。
[Abstract]:With the increase of the accumulated land subsidence, the flood characteristics in the flood storage and detention area have changed to a certain extent. Taking Jiakouwa flood storage and detention area as an example, a two-dimensional hydrodynamic model based on two kinds of surface elevation data was constructed by analyzing the ground subsidence, and the design flood was simulated once in a hundred years in Daqing River. By comparing the process of flood routing before and after land subsidence, the difference between submerged water level and flood submerged area, the following conclusions are drawn: under the condition that the inflow process and the volume of storage are identical, The ground subsidence will cause the flood in Jiakouwa flood storage and detention area to slow down, the submerged water level will decrease, and the maximum submergence range will increase. The conclusion can provide decision basis and scientific guidance for flood control and disaster reduction in flood detention area and flood control operation of Daqing River.
【作者单位】：天津大学水利工程仿真与安全国家重点实验室;
【基金】：水利部公益性行业专项经费项目(201301069)
【分类号】：TV873;P642.26

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