坝后淤积条件下泥石流冲击拦挡坝动力响应研究

王东坡; 廖承兴; 瞿华南; 闫帅星

doi:10.3799/dqkx.2022.424

Volume 49 Issue 3

Mar. 2024

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Article Navigation > Earth Science > 2024 > 49(3): 1017-1027

Wang Dongpo, Liao Chengxing, Qu Huanan, Yan Shuaixing, 2024. Study on Dynamic Response of Debris Flow Impact on Check Dam with Sediments. Earth Science, 49(3): 1017-1027. doi: 10.3799/dqkx.2022.424

Citation:

Wang Dongpo, Liao Chengxing, Qu Huanan, Yan Shuaixing, 2024. Study on Dynamic Response of Debris Flow Impact on Check Dam with Sediments. Earth Science, 49(3): 1017-1027. doi: 10.3799/dqkx.2022.424

Wang Dongpo, Liao Chengxing, Qu Huanan, Yan Shuaixing, 2024. Study on Dynamic Response of Debris Flow Impact on Check Dam with Sediments. Earth Science, 49(3): 1017-1027. doi: 10.3799/dqkx.2022.424

Citation:

Wang Dongpo, Liao Chengxing, Qu Huanan, Yan Shuaixing, 2024. Study on Dynamic Response of Debris Flow Impact on Check Dam with Sediments. Earth Science, 49(3): 1017-1027. doi: 10.3799/dqkx.2022.424

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Study on Dynamic Response of Debris Flow Impact on Check Dam with Sediments

doi: 10.3799/dqkx.2022.424

1.
State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
2.
Sichuan Geological Environment Suervey and Research Center, Chengdu 610036, China

Received Date: 2022-07-14
Available Online: 2024-04-12
Publish Date: 2024-03-25

Abstract

Abstract

Effective reservoir capacity of retaining dam and impact force of debris flow are important indexes for the design of entity check dam of debris flow. Deposits or even fills in the existing entity check dam under repeated impact of debris flows, have great influence on the control ability of dam body. In this paper, based on theoretical analysis and physical model test, dynamic response of debris flow impinging entity check dam under the condition of silting behind dam is studied, dimensionless calculation formulas of velocity attenuation rate and retaining rate of dam body under the condition of silting behind dam are derived, and calculation model of impact force of debris flow under the condition of silting behind dam considering spatial distribution characteristics is established. The results show that the velocity attenuation rate and dam retaining rate of debris flow are positively correlated with the ratio of silt height to silt length and the relative density of debris flow. The combined calculation model of impact force and static and dynamic load of debris flow can better reflect the composition and distribution of impact force of debris flow under the condition of silting behind the dam. This study can provide theoretical and technical support for the design of solid debris flow retaining dam engineering.
- entity check dam,
- sediments behind the dam,
- velocity attenuation rate,
- blocking rate,
- impact force,
- dynamic response,
- engineering geology

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References(42)

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