Dynamic Analysis and Hazard Assessment of Debris Flows in Donghaolitaogao

Authors

  • Zijian Chen College of Construction Engineering, Jilin University, Changchun 130026, Jilin, China
  • Shengyuan Song College of Construction Engineering, Jilin University, Changchun 130026, Jilin, China
  • Baotian Li China Railway Third Bureau Group Sixth Engineering Co., Ltd, Jinzhong 030600, Shanxi, China
  • Ze Yang College of Construction Engineering, Jilin University, Changchun 130026, Jilin, China
  • Muye Ma College of Construction Engineering, Jilin University, Changchun 130026, Jilin, China

DOI:

https://doi.org/10.53469/jrse.2024.06(10).06

Keywords:

Dynamic analysis of debris flow, Hazard assessment, FLO-2D

Abstract

Utilizing the FLO-2D software, the motion processes of debris flows in Donghaolitaogao under 20-year, 50-year, and 100-year return periods of rainfall are analyzed, revealing that as the rainfall return period increases, the debris flow velocity, accumulation depth, and accumulation area all significantly expand. Specifically, under the 20-year, 50-year, and 100-year rainfall conditions, the maximum debris flow velocities are 1.85 m/s, 1.95 m/s, and 1.99 m/s, respectively, while the maximum accumulation depths are 1.31 m, 1.33 m, and 1.35 m, and the total accumulation areas are 27,267.8 m2, 31,500.6 m2, and 33,901.3 m2, respectively. Using the depth of debris flow and the product of debris flow depth and velocity as evaluation indicators, the debris flow hazard assessment indicates that the Donghaolitaogao debris flow is primarily characterized by low- and medium-risk areas, with high-risk areas scattered sporadically along the central part of the channel. Moreover, as the rainfall return period increases, the area of high-risk zones continues to expand, gradually accounting for a larger proportion of the total hazard zone.

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Published

2024-10-30

How to Cite

Chen, Z., Song, S., Li, B., Yang, Z., & Ma, M. (2024). Dynamic Analysis and Hazard Assessment of Debris Flows in Donghaolitaogao. Journal of Research in Science and Engineering, 6(10), 22–30. https://doi.org/10.53469/jrse.2024.06(10).06

Issue

Vol. 6 No. 10 (2024): JRSE-Volume 6 Issue 10

Section

Articles

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Copyright (c) 2024 Zijian Chen, Shengyuan Song, Baotian Li, Ze Yang, Muye Ma

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.