Abstract
The failure mechanism of a locked segment landslide is very important for early landslide warning and prediction. The physical model test is one of the most effective methods for investigating the failure mechanism of landslides. In this study, in addition to a self-made physical model test device for landslides with an arch locked segment failure mechanism, three-dimensional laser scanners, miniature earth pressure sensors, high-definition cameras, and other instruments were used to monitor the landslide shape, stress, and displacement with high precision. Physical model tests were carried out to investigate the failure mechanism of landslides with different arch locked segment widths. The test results reveal that as the width of the locked segment increased, the locking effect became more obvious, and the arch locked segment played an important role in controlling the stability of the landslide. By considering the vertical displacement cloud map, slope surface changes, earth pressure, and deep displacement curves, the stress response characteristics and deformation characteristics of the landslides with an arch locked segment were analyzed, the failure process of landslides with an arch-tipping locked segment was elucidated, and the failure mechanism of the arch locked segment landslide was further clarified. Exploring the instability mechanism of arch locked segment sliding failure is aimed to provide some effective information for the early warning, forecasting and prevention of similar landslides.
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Acknowledgements
We thank Liwen Bianji, Edanz Editing China (www.liwenbianji.cn/ac), for editing the English text of a draft of this manuscript.
Funding
This study was supported by the National Natural Science Foundation of China (NO. U1704243) and the National Key R&D Program of China (NO. 2019YFC1509704).
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Liu, H., Guo, Z. & Chen, J. Experimental study on failure mechanism of arch locked segment landslides. Arab J Geosci 15, 89 (2022). https://doi.org/10.1007/s12517-021-08968-2
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DOI: https://doi.org/10.1007/s12517-021-08968-2