[1]杨子越,鲁　洋,王　建,等.库区束窄断面对溃坝洪水演进影响机制[J].郑州大学学报(工学版),2026,47(01):116-123.[doi:10.13705/j.issn.1671-6833.2025.04.005]
　YANG Ziyue,LU Yang,WANG Jian,et al.The Impact of Narrow Sections in Reservoir Areas on the Evolution of Dam Failure Floods and Its Mechanism[J].Journal of Zhengzhou University (Engineering Science),2026,47(01):116-123.[doi:10.13705/j.issn.1671-6833.2025.04.005]
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库区束窄断面对溃坝洪水演进影响机制()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
47
期数:
2026年01期
页码:
116-123
栏目:
出版日期:
2026-01-06

文章信息/Info

Title:
The Impact of Narrow Sections in Reservoir Areas on the Evolution of Dam Failure Floods and Its Mechanism
文章编号:
1671-6833(2026)01-0116-08
作者:
杨子越1;  鲁　洋1;  王　建1; 2;  项　凯1;  曹子阳1; 王　帅3
1.河海大学 水利水电学院,江苏 南京 210098;2.河海大学 卓越工程师学院,江苏 南京 210098;3.辽宁省送变电工程有限公司,辽宁 沈阳 110021
Author(s):
YANG Ziyue1;  LU Yang1;  WANG Jian1; 2;  XIANG Kai1;  CAO Ziyang1;  WANG Shuai3
1.School of Water Resources and Hydropower Engineering, Hohai University, Nanjing 210098, China; 2.Graduate College for Elite Engineers, Hohai University, Nanjing 210098, China; 3. Liaoning Transmission and Transformation Engineering Co., Ltd., Shenyang 110021, China
关键词:
HEC-RAS软件;  DEM精细化处理;  束窄断面;  溃坝;  错峰;  削峰
Keywords:
HEC-RAS;  DEM refinement;  narrow section;  dam failure;  peak shifting;  peak shaving
分类号:
TV122+.4X43
DOI:
10.13705/j.issn.1671-6833.2025.04.005
文献标志码:
A
摘要:
库区复杂的地形特征,尤其是常见的束窄断面,对洪水演进过程有重要影响。为了揭示束窄断面等天然特殊地形对溃坝洪水演进的影响机制,对地形精细化处理以及溃坝计算方法进行研究。以某水库工程为例,利用Civil 3D和HEC-RAS软件对DEM数据中的上游库区束窄断面以及下游主河槽进行精细化处理,并提出了一种改进计算方法,将库区定义为二维流动区域,弥补了常规手段在反映上游库区真实地形方面的不足,并能更准确模拟实际地形对溃坝洪水演进的影响。计算结果表明,洪水到达时间平均延后1 h,溃坝洪峰淹没水深极值降幅达49.52%,可见束窄断面起到显著的错峰和削峰作用,增加了下游居民应急撤离时间,有效降低了淹没风险。改进方法的推广应用将有助于优化避险方案设计,提高防洪决策的经济性和科学性。
Abstract:
The complex topographic features of the reservoir area, especially the common narrow sections, have a significant impact on the flood evolution process. To reveal the influence mechanism of narrow sections and other natural special terrains on the evolution of dam failure floods, a study was conducted on terrain refinement and dam failure calculation methods. Taking a reservoir project as an example, Civil 3D and HEC-RAS software were used to refine the narrow sections of the upstream reservoir area and the downstream main channel in the DEM data. An improved calculation method was proposed, defining the reservoir area as a two-dimensional flow region, compensating for the limitations of conventional methods in reflecting the real terrain of the upstream reservoir. It allowed for a more accurate simulation of the impact of actual terrain on the evolution of dam failure floods. The calculation results showed that the flood arrival time was delayed by an average of 1 hour, and the maximum inundation depth of dam failure flood peak was reduced by 49.52%. It was evident that narrow sections could play a significant role in peak shifting and peak cutting, increasing the emergency evacuation time for downstream residents and effectively reducing inundation risk. The promotion and application of the improved method could help optimize the design of evacuation schemes and improve the economic and scientific basis for flood control decision-making.

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更新日期/Last Update: 2026-01-17