西柳沟流域拦沙坝沟道冲刷减蚀能力模拟

封扬帆; 李鹏; 张祎; 周世璇; 董亚维; 李晶晶

doi:10.13870/j.cnki.stbcxb.2022.05.004

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西柳沟流域拦沙坝沟道冲刷减蚀能力模拟

更新时间：2025-03-12

- 西柳沟流域拦沙坝沟道冲刷减蚀能力模拟
- Simulation on the Gully Erosion Reduction Ability of Check Dam in Xiliugou Basin
- 水土保持学报 2022年36卷第5期页码：24-31
- 作者机构：
  
  1. 西安理工大学省部共建西北旱区生态水利国家重点实验室,西安,710048
  2. 旱区生态水文与侵蚀灾害防治国家林业和草原局重点实验室,西安,710048
  3. 黄河水利委员会黄河上中游管理局,西安,710021
- 作者简介：
  
  [ "封扬帆(1997-),男,在读硕士研究生,主要从事流域水文模拟与水土保持研究。E-mail:fengyangfan01@163.com" ]
- 基金信息：
  
  鄂尔多斯拦沙换水试点工程沟道冲刷减蚀监测项目(LSHS-2020-01)
- DOI：10.13870/j.cnki.stbcxb.2022.05.004
  中图分类号： S157.1
- 纸质出版：2022
- 稿件说明：
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封扬帆, 李鹏, 张祎, 等. 西柳沟流域拦沙坝沟道冲刷减蚀能力模拟[J]. 水土保持学报, 2022,36(5):24-31.

FENG Yangfan, LI Peng, ZHANG Yi, et al. Simulation on the Gully Erosion Reduction Ability of Check Dam in Xiliugou Basin[J]. 2022, 36(5): 24-31.
封扬帆, 李鹏, 张祎, 等. 西柳沟流域拦沙坝沟道冲刷减蚀能力模拟[J]. 水土保持学报, 2022,36(5):24-31. DOI： 10.13870/j.cnki.stbcxb.2022.05.004.

FENG Yangfan, LI Peng, ZHANG Yi, et al. Simulation on the Gully Erosion Reduction Ability of Check Dam in Xiliugou Basin[J]. 2022, 36(5): 24-31. DOI： 10.13870/j.cnki.stbcxb.2022.05.004.

摘要

为探讨风水交错侵蚀区拦沙坝建设对流域沟道侵蚀动力过程及沟道冲刷侵蚀能力的影响

通过分布式水文模型MIKE SHE以及一维水动力模型MIKE 11耦合模拟了西柳沟流域洪水过程

分析了新建拦沙坝建设前后流域沟道侵蚀动力变化

通过建立流域次暴雨水沙响应模型估算了新建拦沙坝工程运行期内的沟道冲刷减蚀能力。结果表明:(1)拦沙坝建成后

流域出口处洪峰流量减少40.90%

洪水总量减小35.85%

显著改变了西柳沟流域洪水过程

洪水过程线明显坦化;(2)流域主沟道平均最大流速、最大径流剪切力和最大径流功率分别减小21.66%

22.02%和34.31%

有效降低了沟道侵蚀动力;(3)在多年平均降水情况下

预计流域新建拦沙坝工程在25年工程运行期内的冲刷减蚀能力可达到3 309.49万t。研究结果可为风水交错侵蚀区拦沙坝减蚀能力评估提供理论支撑。

Abstract

In order to scientifically understand the effect of the construction of check dams on the erosion dynamics and the ability to reduce gully erosion in the wind-water cross erosion area

in this study

the Xiliugou Basin

one of the ten tributaries

was taken as the research area

and the differences of flood process

erosion dynamics and energy in gully after the construction of check dams were simulated and quantitatively calculated by coupling the distributed hydrological model MIKE SHE and the one-dimensional hydrodynamic model MIKE 11. The reduction of gully erosion by check dams was also estimated. The results showed that: (1) The check dams decreased the flood peak and flood volume of the outlet section by 40.90% and 35.85%

respectively. (2) The average flow velocity

runoff shear force and runoff power along the main gully of the watershed were dropped by 21.66%

22.02% and 34.31%

respectively. (3) During the planned operation period of the project

the check dams reduced the amount of gully erosion by 33.094 9 million tons under the condition of multi-year average precipitation. The construction of check dams has significantly changed the flooding process of Xiliugou Basin

which alleviated the erosion dynamics along the main channel as well as provided effective erosion mitigation effects.

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基于MIKE模型的不同淤地坝型组合情景对小流域侵蚀动力和输沙量的影响