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Physical model tests to determine the mechanism of submarine landslides under the effect of sea waves

Author

Listed:
  • Cong Liu

    (Shandong University)

  • Shucai Li

    (Shandong University)

  • Zongqing Zhou

    (Shandong University)

  • Liping Li

    (Shandong University)

  • Shaoshuai Shi

    (Shandong University)

  • Meixia Wang

    (Shandong University)

  • Chenglu Gao

    (Shandong University)

Abstract

Submarine landslides are a common type of disaster which threaten property and the safety of human life. To effectively prevent and control such disasters, we conduct a series of large-scale physical model tests to determine the mechanism of submarine landslides. First, a large-scale physical model test system is designed and developed, including flume test frame, wave-making system, wave-absorbing system, and data monitoring system. In the tests, we investigate the effect of different sea waves by changing the parameters of the wave-making system and the influence of the slope inclination by constructing different models. Data regarding the wave pressure acting on the slope surface, seepage pressure, and displacement are monitored during the test procedure. The test results show that the seepage pressure in the faults varies cyclically with the sea waves and is lower at internal points than at outcrops. If the wave loading time is sufficiently long, the seepage pressure and displacement deformation in the fault zone will gradually increase. In other words, failures in fault zones precede submarine landslides. The weak fault zone provides the preferred sliding surface, and the sea waves supply the external dynamic energy for submarine landslides. The conclusions provide guidelines for similar engineering and research.

Suggested Citation

  • Cong Liu & Shucai Li & Zongqing Zhou & Liping Li & Shaoshuai Shi & Meixia Wang & Chenglu Gao, 2020. "Physical model tests to determine the mechanism of submarine landslides under the effect of sea waves," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 102(3), pages 1451-1474, July.
  • Handle: RePEc:spr:nathaz:v:102:y:2020:i:3:d:10.1007_s11069-020-03982-1
    DOI: 10.1007/s11069-020-03982-1
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    References listed on IDEAS

    as
    1. Min Zhang & Yu Huang & Yangjuan Bao, 2016. "The mechanism of shallow submarine landslides triggered by storm surge," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 81(2), pages 1373-1383, March.
    2. Jie Dou & Ali P. Yunus & Yueren Xu & Zhongfan Zhu & Chi-Wen Chen & Mehebub Sahana & Khabat Khosravi & Yong Yang & Binh Thai Pham, 2019. "Torrential rainfall-triggered shallow landslide characteristics and susceptibility assessment using ensemble data-driven models in the Dongjiang Reservoir Watershed, China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 97(2), pages 579-609, June.
    3. Min Zhang & Yu Huang & Yangjuan Bao, 2016. "The mechanism of shallow submarine landslides triggered by storm surge," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 81(2), pages 1373-1383, March.
    4. Francesco Marra, 2019. "Rainfall thresholds for landslide occurrence: systematic underestimation using coarse temporal resolution data," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 95(3), pages 883-890, February.
    5. Fasheng Miao & Yiping Wu & Linwei Li & Kang Liao & Longfei Zhang, 2019. "Risk assessment of snowmelt-induced landslides based on GIS and an effective snowmelt model," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 97(3), pages 1151-1173, July.
    6. Min Zhang & Weilong Zhang & Yu Huang & Yuelou Cai & Shiwei Shen, 2019. "Failure mechanism of submarine slopes based on the wave flume test," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 96(3), pages 1249-1262, April.
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