水流作用下库区滑坡涌浪传播及波压分布规律研究

杜修力; 陈海锋; 王丕光; 董慧慧

doi:10.11899/zzfy20240171

水流作用下库区滑坡涌浪传播及波压分布规律研究

doi: 10.11899/zzfy20240171

杜修力^{1, 2,},
陈海锋¹,
王丕光^{1, 2, ,},
董慧慧^{1, 2}

1.
北京工业大学, 桥梁工程安全与韧性全国重点实验室, 北京 100124
2.
北京工业大学, 教育部重点实验室, 北京 100124

基金项目: 国家重点研发计划项目（2022 YFC3004300）

详细信息

作者简介:
杜修力，男，生于1962年。教授，博士生导师。主要从事大型工程结构抗震研究。E-mail：duxiuli@bjut.edu.cn

通讯作者:
王丕光，男，生于1985年。教授，硕士生导师。主要从事桥梁抗震及防灾减灾等方面研究。E-mail：wangpiguang1985@126.com

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出版历程
- 收稿日期: 2024-07-09
- 录用日期: 2024-12-31
- 修回日期: 2024-12-20
- 网络出版日期: 2025-09-24

Study on the Propagation and Wave Pressure Distribution of Landslide Surge Waves in Reservoirs under the Influence of Water Flow

Du Xiuli^{1, 2
,},
Chen Haifeng¹,
Wang Piguang^{1, 2
, ,},
Dong Huihui^{1, 2}

1.
National Key Laboratory of Bridge Safety and Resilience, Beijing University of Technology, Beijing 100124, China
2.
National Key Laboratory of the Ministry of Education, Beijing University of Technology, Beijing 100124, China

摘要

摘要: 西部山区由于其地形地势特点，极易发生地震滑坡等灾害，滑坡体高速入水产生涌浪，对建筑结构造成巨大危害。本文基于计算流体动力学（CFD）的FLUENT软件，建立了滑坡涌浪三维数值模型，通过已有的物理模型试验验证了该数值方法的有效性，进一步探讨了水流动力作用下滑坡涌浪的传播规律及动水压力的变化规律。数值模拟结果表明，考虑水流作用后，涌浪波高的变化随着流速的增加而增大，流速0.5m/s时波高约为无水流的3倍；不同测点处首浪动水压强最大值、以及动水压差会不同程度受水流作用的影响，动水压差最大能达到600Pa；当滑坡体的宽度增加1倍时，波压波动的相对变化增加了15%；滑坡体滑速增大1m/s时，波压波动的相对变化增加了约17%。
- 滑坡涌浪 /
- 水流动力 /
- CFD /
- 动水压强 /
- 水面高程
Abstract: The mountainous regions in western China are highly susceptible to disasters such as earthquakes and landslides due to their complex topography. When landslide masses rapidly enter water, they generate surge waves that pose significant threats to structural safety. Using the computational fluid dynamics (CFD) software FLUENT, this study establishes a three-dimensional numerical model of landslide-induced surge waves. Validated by existing physical model experiments, the numerical simulation reveals that water flow significantly amplifies surge wave dynamics. For instance, at a flow velocity of 0.5 m/s, the wave height triples compared to scenarios without water flow. The maximum dynamic water pressure and pressure differences at various measurement points are influenced by water flow, with the maximum pressure difference reaching 600 Pa. Furthermore, doubling the landslide width increases wave pressure fluctuations by 15%, while a 1 m/s rise in landslide velocity leads to a 17% increase in pressure fluctuations....
- Landslide surge /
- Water flow dynamics /
- CFD /
- Dynamic water pressure /
- Water surface elevation

HTML全文

图 1 滑坡涌浪计算模型

Figure 1. Landslide surge wave calculation model

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图 2 网格划分示意图

Figure 2. Schematic diagram of grid partitioning

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图 3 网格无关性验证

Figure 3. Grid independence verification

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图 4 不同位置水面高程验证

Figure 4. Validation of water surface elevation at different locations

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图 5 水面高程变化规律

Figure 5. Patterns of water surface elevation variations

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图 6 压强尖峰前后滑坡体后空腔的演变

Figure 6. Evolution of the cavities behind the landslide body before and after pressure peaks

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图 7 河道下游动水压强变化规律

Figure 7. Variations of dynamic pressure in the downstream of the river channel

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图 8 河道上游动水压强变化规律

Figure 8. Variations of dynamic pressure in the upstream of the river channel

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图 9 河道上游首浪最值变化规律

Figure 9. Variations of peak values of the leading wave in the upstream of the river channel

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图 10 不同水深处动水压强变化规律

Figure 10. Variations of dynamic pressure at different water depths

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图 11 不同水深首浪最值变化规律

Figure 11. Variations of peak values of the leading wave at different water depths

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图 12 不同宽度滑坡体的动水压强变化规律

Figure 12. Variations of dynamic pressure in landslide bodies of different widths

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图 13 不同滑速时动水压强变化规律

Figure 13. Variations of dynamic pressure at different sliding velocities

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表 1 网格参数

Table 1. Grid parameters

编号	网格尺寸D/m	局部尺寸d/m	单元数	节点数	最低高程/m
1	0.2	0.08	89859	17979	−0.1606
2	0.15	0.06	181858	35458	−0.1382
3	0.1	0.05	418927	80929	−0.1446
4	0.08	0.04	721392	137417	−0.1459

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表 2 不同水流速度

Table 2. Different water flow velocities

编号	V0	V1	V2	V3	V4	V5
速度/(m·s⁻¹)	0	0.1	0.2	0.3	0.4	0.5

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表 3 高程测点布置

Table 3. Layout of Measurement Points

测点编号	x/m	y/m	z/m
C1	0.64	—	0.86
C2	0.64	—	1.24
C3	0.64	—	1.83
C4	0.64	—	2.74

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表 4 压强测点布置

Table 4. Layout of Pressure Measurement Points

测点编号	x/m	y/m	z/m	测点编号	x/m	y/m	z/m
C5	0.25	−0.5	3	C13	−0.75	−0.5	3
C6	0.5	−0.5	3	C14	−1	−0.5	3
C7	0.75	−0.5	3	C15	−1.5	−0.5	3
C8	1	−0.5	3	C16	−1.75	−0.5	3
C9	1.5	−0.5	3	C17	1.5	−0.25	3
C10	1.75	−0.5	3	C18	1.5	−0.5	3
C11	−0.25	−0.5	3	C19	1.5	−0.75	3
C12	−0.5	−0.5	3	C20	1.5	−1	3

下载: 导出CSV

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